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2019 |
Lorentzen, Line Nim; Wolff, Anne; Narne, Vijaya K; Schmidt, Jesper Hvass Poster presentation at the International Symposium on Auditory and Audiological Research: Vol. 7: Auditory Learning in Biological and Artificial Systems, (SP.40), The Danavox Jubilee Foundation 2019. @conference{isaar2019LNL, title = {The Danish version of the Speech, Spatial and Qualities of hearing scale 12, the SSQ12 – A study of validation and correlation}, author = {Line Nim Lorentzen and Anne Wolff and Vijaya K. Narne and Jesper Hvass Schmidt}, url = {https://whova.com/embedded/speaker_session_detail/isaar_201908/701051/}, year = {2019}, date = {2019-08-21}, booktitle = {Poster presentation at the International Symposium on Auditory and Audiological Research: Vol. 7: Auditory Learning in Biological and Artificial Systems}, number = {SP.40}, organization = {The Danavox Jubilee Foundation}, abstract = {Objective: To test the validity and reliability of the Danish version of the Speech, Spatial and Qualities in Hearing Scale 12 (DK-SSQ12). To this day, a test-retest reliability study of any translation of the SSQ12 has not been conducted. To study the correlation of quality of hearing and Quality of Life (QoL) we wish to investigate the correlation between the DK-SSQ12 and the hearing domain of the Quality of Life questionnaire, 15D, domain 3. Study sample: 1961 participants in the Better hEAring Rehabilitation project was included in population group A. Forty-one subjects without hearing aids and 52 subjects with hearing aids from group A were recruited to population group B. Design: Population group A tested the internal validity of the DK-SSQ12, using Cronbach's alpha (CA). Population group B tested the reliability of the DK-SSQ12 assessing the Inter Correlation Coefficient (ICC). The DK-SSQ12 was distributed twice with a two-week interwall. Spearman's rho was applied to test the correlation of DK-SSQ12 and 15D, 3. Results: The CA, divided into three domains of the DK-SSQ12, ranged from 0.89-0.91 in the Speech domain, 0.81-0.91 in the Spatial domain and 0.75-0.81 in the Qualities domain. Group B showed an ICC of 0.66-0.89 (95% CI 0.44-0.94). All domains of the SSQ12 is significantly correlated to the 15D question 3.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } Objective: To test the validity and reliability of the Danish version of the Speech, Spatial and Qualities in Hearing Scale 12 (DK-SSQ12). To this day, a test-retest reliability study of any translation of the SSQ12 has not been conducted. To study the correlation of quality of hearing and Quality of Life (QoL) we wish to investigate the correlation between the DK-SSQ12 and the hearing domain of the Quality of Life questionnaire, 15D, domain 3. Study sample: 1961 participants in the Better hEAring Rehabilitation project was included in population group A. Forty-one subjects without hearing aids and 52 subjects with hearing aids from group A were recruited to population group B. Design: Population group A tested the internal validity of the DK-SSQ12, using Cronbach's alpha (CA). Population group B tested the reliability of the DK-SSQ12 assessing the Inter Correlation Coefficient (ICC). The DK-SSQ12 was distributed twice with a two-week interwall. Spearman's rho was applied to test the correlation of DK-SSQ12 and 15D, 3. Results: The CA, divided into three domains of the DK-SSQ12, ranged from 0.89-0.91 in the Speech domain, 0.81-0.91 in the Spatial domain and 0.75-0.81 in the Qualities domain. Group B showed an ICC of 0.66-0.89 (95% CI 0.44-0.94). All domains of the SSQ12 is significantly correlated to the 15D question 3. |
Rye, Palle; Ordoñez, Rodrigo; Wolff, Anne; Hougaard, Dan Dupont; Schmidt, Jesper Hvass; Hammershøi, Dorte Poster presentation at the International Symposium on Auditory and Audiological Research: Vol. 7: Auditory Learning in Biological and Artificial Systems, (SP.64), The Danavox Jubilee Foundation 2019. @conference{ISAAR2019PR, title = {A study of reliability and response patterns in self-administered audiometry for adult first-time hearing-aid users}, author = {Palle Rye and Rodrigo Ordoñez and Anne Wolff and Dan Dupont Hougaard and Jesper Hvass Schmidt and Dorte Hammershøi}, url = {https://whova.com/embedded/speaker_session_detail/isaar_201908/701149/}, year = {2019}, date = {2019-08-21}, booktitle = {Poster presentation at the International Symposium on Auditory and Audiological Research: Vol. 7: Auditory Learning in Biological and Artificial Systems}, number = {SP.64}, organization = {The Danavox Jubilee Foundation}, abstract = {Out-of-clinic diagnostics offer the advantage of pre- and post-clinical screenings and potential benefits of increased user ownership, but at the possible cost of accuracy and reliability. The present study examines the determination of a classical audiometric threshold through a custom-made self-administered tablet test, utilizing off-the-shelf Bluetooth headphones. The test includes an initial familiarization session allowing characterization of the user's response time, and integrates a standard usability assessment (System Usability Scale, SUS) accompanied by the experimenter's observations and exit-interview responses. The study compares self-administered thresholds determined in the waiting room of Aalborg University Hospital for 16 potential hearing-aid users with the thresholds determined by the professionals in the subsequent session. The study also includes a comparison of thresholds determined in potential users' own homes, in which case the test is performed both with a standard transportable audiometer and with the out-of-clinic tablet system. The study is on-going.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } Out-of-clinic diagnostics offer the advantage of pre- and post-clinical screenings and potential benefits of increased user ownership, but at the possible cost of accuracy and reliability. The present study examines the determination of a classical audiometric threshold through a custom-made self-administered tablet test, utilizing off-the-shelf Bluetooth headphones. The test includes an initial familiarization session allowing characterization of the user's response time, and integrates a standard usability assessment (System Usability Scale, SUS) accompanied by the experimenter's observations and exit-interview responses. The study compares self-administered thresholds determined in the waiting room of Aalborg University Hospital for 16 potential hearing-aid users with the thresholds determined by the professionals in the subsequent session. The study also includes a comparison of thresholds determined in potential users' own homes, in which case the test is performed both with a standard transportable audiometer and with the out-of-clinic tablet system. The study is on-going. |
Christensen, Mads; Ibsen, Alexander; Hansen, Jens-Ulrik; Piechowiak, Tobias Hearing aids in the drawer: Usage time as a function of auditory and non-auditory factors Conference Poster presentation at the International Symposium on Auditory and Audiological Research: Vol. 7: Auditory Learning in Biological and Artificial Systems, (SP.58), The Danavox Jubilee Foundation 2019. @conference{ISAAR2019TP2, title = {Hearing aids in the drawer: Usage time as a function of auditory and non-auditory factors}, author = {Mads Christensen and Alexander Ibsen and Jens-Ulrik Hansen and Tobias Piechowiak}, url = {https://whova.com/embedded/speaker_session_detail/isaar_201908/701064/}, year = {2019}, date = {2019-08-21}, booktitle = {Poster presentation at the International Symposium on Auditory and Audiological Research: Vol. 7: Auditory Learning in Biological and Artificial Systems}, number = {SP.58}, organization = {The Danavox Jubilee Foundation}, abstract = {The BEAR project is a Danish national audiological project scheduled to run for 5 years from 2016. The overall aim of the project is to improve hearing rehabilitation in Denmark through a revision of current clinical practice. Based on results obtained in the BEAR project, a revised clinical protocol will be suggested, if possible. Potential benefits resulting from the project may have important impact both nationally and internationally. In Denmark, approximately 500,000 – 800,000 people have a treatable hearing loss and around 300,000 people own a hearing aid. However, a large portion (20%) of owners do not use their HAs regularly and the underlying reasons for this are not well understood, but one must conclude that these owners do not sufficiently benefit from their devices. This results in wasted clinical resources and a lack of rehabilitation for people with hearing-impairment. Literature suggest possible causes as to why a significant number of patients do not use their HA regularly: insufficient awareness of hearing difficulties, alternate coping strategies, personality, low trust in the benefit from hearing aids, cognitive and functional restrictions and social stigma. In this study, these literature claims were investigated with the help of the BEAR database.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } The BEAR project is a Danish national audiological project scheduled to run for 5 years from 2016. The overall aim of the project is to improve hearing rehabilitation in Denmark through a revision of current clinical practice. Based on results obtained in the BEAR project, a revised clinical protocol will be suggested, if possible. Potential benefits resulting from the project may have important impact both nationally and internationally. In Denmark, approximately 500,000 – 800,000 people have a treatable hearing loss and around 300,000 people own a hearing aid. However, a large portion (20%) of owners do not use their HAs regularly and the underlying reasons for this are not well understood, but one must conclude that these owners do not sufficiently benefit from their devices. This results in wasted clinical resources and a lack of rehabilitation for people with hearing-impairment. Literature suggest possible causes as to why a significant number of patients do not use their HA regularly: insufficient awareness of hearing difficulties, alternate coping strategies, personality, low trust in the benefit from hearing aids, cognitive and functional restrictions and social stigma. In this study, these literature claims were investigated with the help of the BEAR database. |
Piechowiak, Tobias; Zapala, David Using the BEAR data to obtain shortened version of the SSQ-12 and IOI-HA Conference Poster presentation at the International Symposium on Auditory and Audiological Research: Vol. 7: Auditory Learning in Biological and Artificial Systems, (SP.59), The Danavox Jubilee Foundation 2019. @conference{ISAAR2019TP, title = {Using the BEAR data to obtain shortened version of the SSQ-12 and IOI-HA}, author = {Tobias Piechowiak and David Zapala}, url = {https://whova.com/embedded/speaker_session_detail/isaar_201908/700948/}, year = {2019}, date = {2019-08-21}, booktitle = {Poster presentation at the International Symposium on Auditory and Audiological Research: Vol. 7: Auditory Learning in Biological and Artificial Systems}, number = {SP.59}, organization = {The Danavox Jubilee Foundation}, abstract = {The Speech, Spatial and Qualities of Hearing scale (SSQ-12) and the International Outcome Inventory for Hearing Aids (IOI-HA-7) are questionnaires containing 12 and 7 items, respectively. They are designed to subjectively assess hearing ability and are complementary to behavioral measures. Both questionnaires have been applied across a range of clinical and clinical research-related contexts, for example for assessing outcomes of e.g. cochlear implants and hearing aids. However, due to time constraints neither of the questionnaires seem to be an inherent part of standard clinical quality control. The Better Hearing Rehabilitation (BEAR) database contains SSQ-12 and IOI-HA-7 scores of around 2000 subjects. Applying an explanatory factor analysis (EFA) allowed us to reduce the SSQ-12 to 5 questions and the IOI-HA to 3 remaining questions. The SSQ-5 explains 77% of the variance in the SSQ-12 data while the IOI-HA-3 accounts for 69% of the variance in the original IOI-HA-7 dataset. We judge that these new versions can be used more efficiently by shortening time and focusing on the items that are most effective to reflect individual benefit. Furthermore, the analysis seems to confirm the validity of such a reduction from similar findings in the literature that were done on different datasets.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } The Speech, Spatial and Qualities of Hearing scale (SSQ-12) and the International Outcome Inventory for Hearing Aids (IOI-HA-7) are questionnaires containing 12 and 7 items, respectively. They are designed to subjectively assess hearing ability and are complementary to behavioral measures. Both questionnaires have been applied across a range of clinical and clinical research-related contexts, for example for assessing outcomes of e.g. cochlear implants and hearing aids. However, due to time constraints neither of the questionnaires seem to be an inherent part of standard clinical quality control. The Better Hearing Rehabilitation (BEAR) database contains SSQ-12 and IOI-HA-7 scores of around 2000 subjects. Applying an explanatory factor analysis (EFA) allowed us to reduce the SSQ-12 to 5 questions and the IOI-HA to 3 remaining questions. The SSQ-5 explains 77% of the variance in the SSQ-12 data while the IOI-HA-3 accounts for 69% of the variance in the original IOI-HA-7 dataset. We judge that these new versions can be used more efficiently by shortening time and focusing on the items that are most effective to reflect individual benefit. Furthermore, the analysis seems to confirm the validity of such a reduction from similar findings in the literature that were done on different datasets. |
Hammershøi, Dorte; Wolff, Anne; Andersen, Lykke Junker; Mortensen, Rikke Louise; Nielsen, Mads Dalsgaard; Larsen, Stefanie Aagard Skov Poster presentation at the International Symposium on Auditory and Audiological Research: Vol. 7: Auditory Learning in Biological and Artificial Systems, (SP.17), The Danavox Jubilee Foundation 2019. @conference{ISAAR2019PDP780, title = {A word elicitation study including the development of scales characterizing aided listening experience}, author = {Dorte Hammershøi and Anne Wolff and Lykke Junker Andersen and Rikke Louise Mortensen and Mads Dalsgaard Nielsen and Stefanie Aagard Skov Larsen}, url = {https://whova.com/embedded/speaker_session_detail/isaar_201908/700915/}, year = {2019}, date = {2019-08-21}, booktitle = {Poster presentation at the International Symposium on Auditory and Audiological Research: Vol. 7: Auditory Learning in Biological and Artificial Systems}, number = {SP.17}, organization = {The Danavox Jubilee Foundation}, abstract = {The purpose of the present study was to identify the terms hearing aid professionals and their patients use in the communication about the aided listening experience and develop scales that would help characterize this experience in the domain of corrective actions that a hearing care professional may apply. The study comprised a word elicitation study based on observations and interviews from 18 examinations, involving 7 audiologists, 2 medical audiologists, and 15 adult patients from the audiological department at Aalborg University Hospital. The words patients and professionals used for describing the aided listening experience were itemized, noted on cards, and analyzed by developing an affinity diagram. The resulting 80 words were then sorted by three hearing professionals in a supervised card sorting session, leaving 65 attributes (grouped in 13 main categories) that was considered suitable for suggesting corrective actions. These 65 attributes were included in a 63-point scale design, which (in a usability test including 8 hearing aid users) were considered easy to survey and use, but also including some redundancy and ambiguities. The results suggest that it is possible to develop scales based on the voluntary statements expressed during actual consultations, but that the expressions may not be interpreted the same way by other patients and professionals.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } The purpose of the present study was to identify the terms hearing aid professionals and their patients use in the communication about the aided listening experience and develop scales that would help characterize this experience in the domain of corrective actions that a hearing care professional may apply. The study comprised a word elicitation study based on observations and interviews from 18 examinations, involving 7 audiologists, 2 medical audiologists, and 15 adult patients from the audiological department at Aalborg University Hospital. The words patients and professionals used for describing the aided listening experience were itemized, noted on cards, and analyzed by developing an affinity diagram. The resulting 80 words were then sorted by three hearing professionals in a supervised card sorting session, leaving 65 attributes (grouped in 13 main categories) that was considered suitable for suggesting corrective actions. These 65 attributes were included in a 63-point scale design, which (in a usability test including 8 hearing aid users) were considered easy to survey and use, but also including some redundancy and ambiguities. The results suggest that it is possible to develop scales based on the voluntary statements expressed during actual consultations, but that the expressions may not be interpreted the same way by other patients and professionals. |
Lund, Katja; Ordoñez, Rodrigo; Nielsen, Jens Bo; Hammershøi, Dorte Sentence-based experience-logging in new hearing aid users Conference Poster presentation at the Conference for Internet and Audiology, Southampton, 17-19 June 2019., (15), 2019. @conference{IaA2019KL, title = {Sentence-based experience-logging in new hearing aid users}, author = {Katja Lund and Rodrigo Ordoñez and Jens Bo Nielsen and Dorte Hammershøi}, url = {http://internetaudiology.com/2019/files/IA2019_booklet.pdf}, year = {2019}, date = {2019-06-17}, booktitle = {Poster presentation at the Conference for Internet and Audiology, Southampton, 17-19 June 2019.}, number = {15}, pages = {28}, abstract = {Patients often experience hearing difficulties despite the use of HA (hearing aids). The difficulties may be related to a number of auditory and non-auditory factors such as benefit, comfort, maintenance etc. It is difficult for both the patient and the audiologist to know, if the fitting and the given outcome is the best possible. The sound may be experienced differently in the clinic compared to daily life and the knowledge and skills related to hearing aid use vary largely from patient to patient. The aim of the present study is to gain insight into the daily experiences of new hearing aid users, which may shed light on aspects of aided performance, which may not be unveiled through standard questionnaires or during consultation. Data is collected online and consists of more than 400 pre-fabricated sentences representing experiences related to HA use. The sentences have been developed based on observations, involvement of experts, and inspired by elements from validated questionnaires. Patients are asked to relate to each experience (sentence) on a regular basis over a period of two months. The method is designed as a pass-time activity, where the patients swipe through the randomly presented experiences, and select the ones they have had recently. The sentences are expected to evoke the memory of recent experiences in the patients and at the same time provide a language to describe these. The two-month data-logging is expected to elucidate the short- and long-term challenges of each patient and thus provide a useful feedback – and maybe adjustment – tool in a follow-up situation. The work is on-going. Data will be analyzed and if feasible, summarized in a feedback tool for the professionals for a two-month follow-up. The study is part of BEAR project funded by Innovation Fund Denmark and partners (incl. Oticon, GN Resound and Widex). Funding and collaboration is sincerely appreciated.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } Patients often experience hearing difficulties despite the use of HA (hearing aids). The difficulties may be related to a number of auditory and non-auditory factors such as benefit, comfort, maintenance etc. It is difficult for both the patient and the audiologist to know, if the fitting and the given outcome is the best possible. The sound may be experienced differently in the clinic compared to daily life and the knowledge and skills related to hearing aid use vary largely from patient to patient. The aim of the present study is to gain insight into the daily experiences of new hearing aid users, which may shed light on aspects of aided performance, which may not be unveiled through standard questionnaires or during consultation. Data is collected online and consists of more than 400 pre-fabricated sentences representing experiences related to HA use. The sentences have been developed based on observations, involvement of experts, and inspired by elements from validated questionnaires. Patients are asked to relate to each experience (sentence) on a regular basis over a period of two months. The method is designed as a pass-time activity, where the patients swipe through the randomly presented experiences, and select the ones they have had recently. The sentences are expected to evoke the memory of recent experiences in the patients and at the same time provide a language to describe these. The two-month data-logging is expected to elucidate the short- and long-term challenges of each patient and thus provide a useful feedback – and maybe adjustment – tool in a follow-up situation. The work is on-going. Data will be analyzed and if feasible, summarized in a feedback tool for the professionals for a two-month follow-up. The study is part of BEAR project funded by Innovation Fund Denmark and partners (incl. Oticon, GN Resound and Widex). Funding and collaboration is sincerely appreciated. |
Rye, Palle; Ordoñez, Rodrigo; Hammershøi, Dorte Out-of-clinic diagnostics of hearing impairment Conference Poster presentation at the Conference for Internet and Audiology, Southampton, 17-19 June 2019., (13), 2019. @conference{IaA2019PR, title = {Out-of-clinic diagnostics of hearing impairment}, author = {Palle Rye and Rodrigo Ordoñez and Dorte Hammershøi}, url = {http://internetaudiology.com/2019/files/IA2019_booklet.pdf}, year = {2019}, date = {2019-06-17}, booktitle = {Poster presentation at the Conference for Internet and Audiology, Southampton, 17-19 June 2019.}, number = {13}, pages = {27}, abstract = {The potential benefits of out-of-clinic diagnostics are manifold: it may be used to alleviate clinically trained personnel where resources are scarce, it may reduce the need for travel and it allows for increased privacy and discretion for the potentially hearing impaired, who may see a self-administered hearing test as the first step toward accepting the need for a hearing aid. However, one of the inherent problems of such test situations is the lack of control over the user behavior and the test environment. With respect to the latter, the exact characteristics of the equipment used may not be known or available for routine checks and calibration. Background noise levels may pose a problem in some environments, and be a problem for subjects with audiometric thresholds near normal hearing level at some frequencies. Several strategies can be applied to overcome these challenges. Some types of hearing impairment can be characterized using supra-threshold methods that are more robust to background noise and calibration issues. The background noise level may be passively or actively suppressed, or monitored and applied to discard or repeat unreliable measurements. The purpose of present study is to examine the feasibility of selected out-of-clinic test strategies, and in a first evaluation the effect of each is quantified in laboratory assessments, where the key variables can be controlled. A platform consisting of a tablet-based automated paradigm using commercially available active noise cancelling headphones will be used. The accuracy of the procedures in real-life scenarios are determined by comparing the outcome with clinically determined audiometric measures. How well the test subjects manage the test will also be assessed, and data from a usability point of view will be collected.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } The potential benefits of out-of-clinic diagnostics are manifold: it may be used to alleviate clinically trained personnel where resources are scarce, it may reduce the need for travel and it allows for increased privacy and discretion for the potentially hearing impaired, who may see a self-administered hearing test as the first step toward accepting the need for a hearing aid. However, one of the inherent problems of such test situations is the lack of control over the user behavior and the test environment. With respect to the latter, the exact characteristics of the equipment used may not be known or available for routine checks and calibration. Background noise levels may pose a problem in some environments, and be a problem for subjects with audiometric thresholds near normal hearing level at some frequencies. Several strategies can be applied to overcome these challenges. Some types of hearing impairment can be characterized using supra-threshold methods that are more robust to background noise and calibration issues. The background noise level may be passively or actively suppressed, or monitored and applied to discard or repeat unreliable measurements. The purpose of present study is to examine the feasibility of selected out-of-clinic test strategies, and in a first evaluation the effect of each is quantified in laboratory assessments, where the key variables can be controlled. A platform consisting of a tablet-based automated paradigm using commercially available active noise cancelling headphones will be used. The accuracy of the procedures in real-life scenarios are determined by comparing the outcome with clinically determined audiometric measures. How well the test subjects manage the test will also be assessed, and data from a usability point of view will be collected. |
Hammershøi, Dorte A study of better hearing rehabilitation in Denmark (the BEAR project) Conference Presentation at the 14th Congress of the European Federation of Audiology Societies (EFAS 2019), Lisbon, Portugal, 22-25 May 2019, (04079), European Federation of Audiology Societies 2019. @conference{EFAS2019DH, title = {A study of better hearing rehabilitation in Denmark (the BEAR project)}, author = {Dorte Hammershøi}, url = {https://fff0e2ea-6f01-41b9-b0dd-7dbdf3580dbb.filesusr.com/ugd/09d8d3_dc3fb64898554097a7427d3d03a1f290.pdf}, year = {2019}, date = {2019-05-22}, booktitle = {Presentation at the 14th Congress of the European Federation of Audiology Societies (EFAS 2019), Lisbon, Portugal, 22-25 May 2019}, number = {04079}, organization = {European Federation of Audiology Societies}, abstract = {Background: The overall vision of the project is to improve hearing rehabilitation through an evidence-based renewal of clinical practice. The structured approach comprise studies of the current practice in Denmark, considerations for new methods, experimental application and refinement of this, evaluation and implementation of the most promising renewals. Method: The reference for existing practice is based on data for almost 2,000 patients, which have been fitted with hearing aids during 2017-2018 in two of the participating clinics. The considerations for new profiling methods are based on the analysis of prior studies incl. more diverse diagnostics than used currently. New fitting strategies are preliminarily tested using hearing-aid simulations in laboratory settings, in parallel to test trials of new aided-performance tests and paradigms for assessing user experiences in the field. These studies are all on going and will be reported in more detail in accompanying presentations. The experimental application of the novel fitting strategies is currently being planned, and will include the experimental application of the prospective strategy in real hearing aids. The refinement of novel strategies includes studies of the clinical efficiency, socio-economic trade-offs, options of out-of-clinic application, and attention to populations with low benefits. The evaluation and implementation includes proposals for future standardization, and the collection of any additional reference data for this effort. Results: A clinical database for almost 2,000 patients has been established, which includes standard data supplemented with widely used questionnaires for the assessment of outcome. The clinical practice has been examined for tacit knowledge in validation and assessment of user outcomes. A proposal for four differing hearing profiles has been developed, and six different fitting strategies is examined for their potential. A test battery for aided listening performance has been developed. Acknowledgements: This work was supported by Innovation Fund Denmark Grand Solutions 5164-00011B (Better hEAring Rehabilitation project), Oticon, GN Resound, Widex and other partners (University of Southern Denmark, Aalborg University, the Technical University of Denmark, Force, and Aalborg, Odense and Copenhagen University Hospitals). The funding and collaboration of all partners is sincerely acknowledged.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } Background: The overall vision of the project is to improve hearing rehabilitation through an evidence-based renewal of clinical practice. The structured approach comprise studies of the current practice in Denmark, considerations for new methods, experimental application and refinement of this, evaluation and implementation of the most promising renewals. Method: The reference for existing practice is based on data for almost 2,000 patients, which have been fitted with hearing aids during 2017-2018 in two of the participating clinics. The considerations for new profiling methods are based on the analysis of prior studies incl. more diverse diagnostics than used currently. New fitting strategies are preliminarily tested using hearing-aid simulations in laboratory settings, in parallel to test trials of new aided-performance tests and paradigms for assessing user experiences in the field. These studies are all on going and will be reported in more detail in accompanying presentations. The experimental application of the novel fitting strategies is currently being planned, and will include the experimental application of the prospective strategy in real hearing aids. The refinement of novel strategies includes studies of the clinical efficiency, socio-economic trade-offs, options of out-of-clinic application, and attention to populations with low benefits. The evaluation and implementation includes proposals for future standardization, and the collection of any additional reference data for this effort. Results: A clinical database for almost 2,000 patients has been established, which includes standard data supplemented with widely used questionnaires for the assessment of outcome. The clinical practice has been examined for tacit knowledge in validation and assessment of user outcomes. A proposal for four differing hearing profiles has been developed, and six different fitting strategies is examined for their potential. A test battery for aided listening performance has been developed. Acknowledgements: This work was supported by Innovation Fund Denmark Grand Solutions 5164-00011B (Better hEAring Rehabilitation project), Oticon, GN Resound, Widex and other partners (University of Southern Denmark, Aalborg University, the Technical University of Denmark, Force, and Aalborg, Odense and Copenhagen University Hospitals). The funding and collaboration of all partners is sincerely acknowledged. |
Loquet, Gérard; Narne, Vijay; Piechowiak, Tobias; Wolff, Anne; Houmøller, Sabina Storbjerg; Hougaard, Dan Dupont; Schmidt, Jesper Hvass; Hammershøi, Dorte Better Hearing Rehabilitation (BEAR) Study in Denmark: Introducing the Centralized Clinical Database Conference Poster at the 14th Congress of the European Federation of Audiology Societies (EFAS 2019), Lisbon, Portugal, 22-25 May 2019, (04087-P080), European Federation of Audiology Societies 2019. @conference{EFAS2019GL, title = {Better Hearing Rehabilitation (BEAR) Study in Denmark: Introducing the Centralized Clinical Database}, author = {Gérard Loquet and Vijay Narne and Tobias Piechowiak and Anne Wolff and Sabina Storbjerg Houmøller and Dan Dupont Hougaard and Jesper Hvass Schmidt and Dorte Hammershøi}, url = {https://fff0e2ea-6f01-41b9-b0dd-7dbdf3580dbb.filesusr.com/ugd/09d8d3_dc3fb64898554097a7427d3d03a1f290.pdf}, year = {2019}, date = {2019-05-22}, booktitle = {Poster at the 14th Congress of the European Federation of Audiology Societies (EFAS 2019), Lisbon, Portugal, 22-25 May 2019}, number = {04087-P080}, organization = {European Federation of Audiology Societies}, abstract = {Background: The purpose of the BEAR project is to improve hearing loss management by revising diagnostic techniques and hearing aid fitting practices based on individual hearing profiles, expectations and lifestyle. As a starting point, a large clinical database has been prepared to better characterize the current clinical status in Denmark. The analysis will be used to identify the main challenges faced by hearing aid users in order to develop appropriate tools to improve performances. Method: The study is a multicentre, prospective, open, non-randomized, single-arm trial with sequential enrolment of all qualified patients, conducted under a common clinical investigation plan. Up to almost 2,000 evaluable patients have been enrolled from two Danish clinics. After having undergone medical and audiological examination and other assessments (health related and quality of life questionnaires), the patients were prescribed a hearing aid and got a fitting. Approximately 2 months later, a follow-up visit took place and whenever needed an adjustment was offered (plus other assessments). An across-center database, hosted independently from clinics, universities and hearing-aid manufacturers but accessible by all parties, was created to gather the data (access granted to each partner if data managers adhere to ethical permissions and requirements for data security). Results: The investigation generated approximately 30’000 patient records and we started by characterizing the general distribution of audiometric data (air and bone conductions, speech tests) and questionnaires (health, speech, hearing aids, tinnitus and quality of life related). The analysis focused specifically on correlations detection between demographics, audiometric tests and questionnaires in order to classify patients into subsets. Conclusion: The present clinical database should be seen as a starting point for other BEAR work packages. We believe that such large variety of data generated will lead to a more comprehensive picture of the hearing-aid user and will bring benefits to both clinicians and manufacturers. Indeed, this first step represents the baseline against which new fitting strategies will be tested. Alternatively, clinically relevant subpopulations with low hearing-aid benefit will be identified and studied to tentatively bring alternatives in rehabilitation.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } Background: The purpose of the BEAR project is to improve hearing loss management by revising diagnostic techniques and hearing aid fitting practices based on individual hearing profiles, expectations and lifestyle. As a starting point, a large clinical database has been prepared to better characterize the current clinical status in Denmark. The analysis will be used to identify the main challenges faced by hearing aid users in order to develop appropriate tools to improve performances. Method: The study is a multicentre, prospective, open, non-randomized, single-arm trial with sequential enrolment of all qualified patients, conducted under a common clinical investigation plan. Up to almost 2,000 evaluable patients have been enrolled from two Danish clinics. After having undergone medical and audiological examination and other assessments (health related and quality of life questionnaires), the patients were prescribed a hearing aid and got a fitting. Approximately 2 months later, a follow-up visit took place and whenever needed an adjustment was offered (plus other assessments). An across-center database, hosted independently from clinics, universities and hearing-aid manufacturers but accessible by all parties, was created to gather the data (access granted to each partner if data managers adhere to ethical permissions and requirements for data security). Results: The investigation generated approximately 30’000 patient records and we started by characterizing the general distribution of audiometric data (air and bone conductions, speech tests) and questionnaires (health, speech, hearing aids, tinnitus and quality of life related). The analysis focused specifically on correlations detection between demographics, audiometric tests and questionnaires in order to classify patients into subsets. Conclusion: The present clinical database should be seen as a starting point for other BEAR work packages. We believe that such large variety of data generated will lead to a more comprehensive picture of the hearing-aid user and will bring benefits to both clinicians and manufacturers. Indeed, this first step represents the baseline against which new fitting strategies will be tested. Alternatively, clinically relevant subpopulations with low hearing-aid benefit will be identified and studied to tentatively bring alternatives in rehabilitation. |
Lund, Katja; Hammershøi, Dorte How professionals assess outcome in clinical hearing rehabilitation Conference Presentation at the 14th Congress of the European Federation of Audiology Societies (EFAS 2019), Lisbon, Portugal, 22-25 May 2019, (04039), 2019. @conference{EFAS2019KL, title = {How professionals assess outcome in clinical hearing rehabilitation}, author = {Katja Lund and Dorte Hammershøi}, url = {https://fff0e2ea-6f01-41b9-b0dd-7dbdf3580dbb.filesusr.com/ugd/09d8d3_dc3fb64898554097a7427d3d03a1f290.pdf}, year = {2019}, date = {2019-05-22}, booktitle = {Presentation at the 14th Congress of the European Federation of Audiology Societies (EFAS 2019), Lisbon, Portugal, 22-25 May 2019}, number = {04039}, abstract = {Background: Denmark has currently no formal requirements for testing and documenting the aided listening performance and outcome obtained with hearing aids rehabilitation. Yet most professionals both validate and assess the aided listening experience in various ways as part of the fitting procedure and in follow-up assessments. The goal of the present study was to observe standard clinical practice and identify methods and actions currently used, and examine their potential for formalization and inclusion in guidelines, or replacement by existing formalized procedures. Material and methods: The relevant professionals receive a major part of their training through supervised internships, and it is anticipated that much of their knowledge is tacit and informal. The general methods for the study therefore comprise a combination of interviews with and observations of professionals during hearing-aid fitting and at two-month follow-up. Observations and contextual inquiries of the clinical practice were made in three public hearing clinics in Denmark including 17 professionals, which were either medical audiologists (ENT doctors), audiology assistants or professionals in audiologopedics. These are the main categories of professionals involved in hearing-aid fitting in public clinics in Denmark. Each professional participated between two and ten hours in the present study. Results: The results show that professionals assess outcome using methods, which are often individually and tacitly anchored covering 1) validation of basic hearing aid functionality, 2) patient awareness on gain with hearing aids, 3) access to knowledge on patient experiences through sound descriptions, 4) assessment of aided performance in real life and 5) non-auditory assessments. Conclusion: Some of the informal methods observed may be formalized as a part of a more patient-centered communication strategy – other need further examination or may be replaced by existing, already validated formal frameworks, or by test batteries under development. Acknowledgement: The collaboration within the BEAR project and funding by Innovation Fund Denmark and partners of the BEAR project (incl. Oticon, GN Resound and Widex) is sincerely appreciated.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } Background: Denmark has currently no formal requirements for testing and documenting the aided listening performance and outcome obtained with hearing aids rehabilitation. Yet most professionals both validate and assess the aided listening experience in various ways as part of the fitting procedure and in follow-up assessments. The goal of the present study was to observe standard clinical practice and identify methods and actions currently used, and examine their potential for formalization and inclusion in guidelines, or replacement by existing formalized procedures. Material and methods: The relevant professionals receive a major part of their training through supervised internships, and it is anticipated that much of their knowledge is tacit and informal. The general methods for the study therefore comprise a combination of interviews with and observations of professionals during hearing-aid fitting and at two-month follow-up. Observations and contextual inquiries of the clinical practice were made in three public hearing clinics in Denmark including 17 professionals, which were either medical audiologists (ENT doctors), audiology assistants or professionals in audiologopedics. These are the main categories of professionals involved in hearing-aid fitting in public clinics in Denmark. Each professional participated between two and ten hours in the present study. Results: The results show that professionals assess outcome using methods, which are often individually and tacitly anchored covering 1) validation of basic hearing aid functionality, 2) patient awareness on gain with hearing aids, 3) access to knowledge on patient experiences through sound descriptions, 4) assessment of aided performance in real life and 5) non-auditory assessments. Conclusion: Some of the informal methods observed may be formalized as a part of a more patient-centered communication strategy – other need further examination or may be replaced by existing, already validated formal frameworks, or by test batteries under development. Acknowledgement: The collaboration within the BEAR project and funding by Innovation Fund Denmark and partners of the BEAR project (incl. Oticon, GN Resound and Widex) is sincerely appreciated. |
Sanchez-Lopez, Raul; Nielsen, Silje Grini; Ej-Haj-Ali, Mouhamad; Cañete, Oscar; Wu, Mengfan; Fereczkowski, Michal; Bianchi, Federica; Neher, Tobias; Dau, Torsten; Santurette, Sebastién Presentation at the 14th Congress of the European Federation of Audiology Societies (EFAS 2019), Lisbon, Portugal, 22-25 May 2019, (03921), European Federation of Audiology Societies 2019. @conference{EFAS2019RSL, title = {Auditory profiling as a tool for characterizing individual hearing deficits: Data-driven analysis of the results of the BEAR Test Battery}, author = {Raul Sanchez-Lopez and Silje Grini Nielsen and Mouhamad Ej-Haj-Ali and Oscar Cañete and Mengfan Wu and Michal Fereczkowski and Federica Bianchi and Tobias Neher and Torsten Dau and Sebastién Santurette}, url = {https://fff0e2ea-6f01-41b9-b0dd-7dbdf3580dbb.filesusr.com/ugd/09d8d3_dc3fb64898554097a7427d3d03a1f290.pdf}, year = {2019}, date = {2019-05-22}, booktitle = {Presentation at the 14th Congress of the European Federation of Audiology Societies (EFAS 2019), Lisbon, Portugal, 22-25 May 2019}, number = {03921}, organization = {European Federation of Audiology Societies}, abstract = {Background: One aim of the Better hEAring Rehabilitation (BEAR) project is to define a new clinical profiling tool, a test-battery, for individualized hearing loss characterization. Whereas the loss of sensitivity can be efficiently assessed by pure-tone audiometry, it still remains a challenge to address supra-threshold hearing deficits using appropriate clinical diagnostic tools. In contrast to the classical attenuation-distortion model, the proposed BEAR approach is based on the hypothesis that any listener’s hearing can be characterized along two dimensions reflecting largely independent types of perceptual distortions. Recently, a data-driven approach (Sanchez-Lopez et al., 2018) provided evidence consistent with the existence of two independent sources of distortion, and thus different auditory profiles. Method: Based on considerations of feasibility, time efficiency and evidence from literature, 11 tests were selected for the clinical test battery. The proposed tests were divided into six categories: audibility, middle-ear analysis, speech perception, binaural-processing abilities, loudness perception, and spectro-temporal resolution. Fifty-seven listeners with symmetric, mild-to-severe sensorineural hearing loss were selected from a clinical population of hearing-aid users who completed all tests included in the battery. The participants were tested in a clinical environment and did not receive systematic training for any of the tasks. Results: The analysis of the preliminary results will focus on the ability of each test to pinpoint individual differences among the participants, relationships among the different tests, and determining their potential use in clinical settings. Importantly, a parallel study will evaluate the extent to which the outcomes of these tests can be used for hearing-aid fitting. Conclusion: Based on the results of a data-driven analysis for auditory profiling, the test battery will be refined and implemented as a clinical profiling tool in audiology clinics.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } Background: One aim of the Better hEAring Rehabilitation (BEAR) project is to define a new clinical profiling tool, a test-battery, for individualized hearing loss characterization. Whereas the loss of sensitivity can be efficiently assessed by pure-tone audiometry, it still remains a challenge to address supra-threshold hearing deficits using appropriate clinical diagnostic tools. In contrast to the classical attenuation-distortion model, the proposed BEAR approach is based on the hypothesis that any listener’s hearing can be characterized along two dimensions reflecting largely independent types of perceptual distortions. Recently, a data-driven approach (Sanchez-Lopez et al., 2018) provided evidence consistent with the existence of two independent sources of distortion, and thus different auditory profiles. Method: Based on considerations of feasibility, time efficiency and evidence from literature, 11 tests were selected for the clinical test battery. The proposed tests were divided into six categories: audibility, middle-ear analysis, speech perception, binaural-processing abilities, loudness perception, and spectro-temporal resolution. Fifty-seven listeners with symmetric, mild-to-severe sensorineural hearing loss were selected from a clinical population of hearing-aid users who completed all tests included in the battery. The participants were tested in a clinical environment and did not receive systematic training for any of the tasks. Results: The analysis of the preliminary results will focus on the ability of each test to pinpoint individual differences among the participants, relationships among the different tests, and determining their potential use in clinical settings. Importantly, a parallel study will evaluate the extent to which the outcomes of these tests can be used for hearing-aid fitting. Conclusion: Based on the results of a data-driven analysis for auditory profiling, the test battery will be refined and implemented as a clinical profiling tool in audiology clinics. |
Wu, Mengfan; Sanchez-Lopez, Raul; El-Haj-Ali, Mouhamad; Nielsen, Silje Grini; Fereczkowski, Michal; Bianchi, Federica; Dau, Torsten; Santurette, Sebastién; Neher, Tobias Presentation at the 14th Congress of the European Federation of Audiology Societies (EFAS 2019), Lisbon, Portugal, 22-25 May 2019, (03875), European Federation of Audiology Societies 2019. @conference{EFAS2019MW, title = {Hearing aid processing strategies for listeners with different auditory profiles: Insights from the BEAR project}, author = {Mengfan Wu and Raul Sanchez-Lopez and Mouhamad El-Haj-Ali and Silje Grini Nielsen and Michal Fereczkowski and Federica Bianchi and Torsten Dau and Sebastién Santurette and Tobias Neher}, url = {https://fff0e2ea-6f01-41b9-b0dd-7dbdf3580dbb.filesusr.com/ugd/09d8d3_dc3fb64898554097a7427d3d03a1f290.pdf}, year = {2019}, date = {2019-05-22}, booktitle = {Presentation at the 14th Congress of the European Federation of Audiology Societies (EFAS 2019), Lisbon, Portugal, 22-25 May 2019}, number = {03875}, organization = {European Federation of Audiology Societies}, abstract = {Background, The Better hEAring Rehabilitation (BEAR) project pursues the development and evaluation of new, clinically feasible strategies for individual hearing loss diagnosis and hearing aid (HA) fitting. Two essential elements of this research are the design of a new diagnostic test battery for identifying different auditory profiles and linking those profiles to different HA processing strategies. The current study focused on establishing links between four auditory profiles and the benefit from six HA processing strategies. Material and methods, Sixty older individuals with bilateral mild-to-severe sensorineural hearing losses from a clinical population of HA users participated. Speech-in-noise stimuli were generated with the help of a HA simulator that included directional processing, noise reduction and dynamic range compression. Stimulus presentation was via headphones. Six HA settings differing in terms of signal-to-noise ratio (SNR) improvement and temporal and spectral speech distortions were selected for testing based on a comprehensive technical evaluation of different HA parameter settings. Speech-in-noise perception was assessed at fixed SNRs that were chosen based on individual speech reception threshold measurements. In addition, overall preference and noise annoyance were assessed using a multiple stimulus comparison paradigm. Results, We hypothesize that the perceptual outcomes from the six HA settings will differ across the different auditory profiles. More specifically, we expect listeners showing high sensitivity to temporal and spectral signal changes to perform best with and/or to prefer HA settings that preserve those cues. In contrast, we expect listeners showing low sensitivity to temporal and spectral signal changes to perform best with settings that maximize SNR improvement, independent of any additional signal distortions. Conclusions, We anticipate that the findings from the current study will provide the basis for the implementation of more individualized HA fitting strategies to be tested subsequently in wearable HAs.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } Background, The Better hEAring Rehabilitation (BEAR) project pursues the development and evaluation of new, clinically feasible strategies for individual hearing loss diagnosis and hearing aid (HA) fitting. Two essential elements of this research are the design of a new diagnostic test battery for identifying different auditory profiles and linking those profiles to different HA processing strategies. The current study focused on establishing links between four auditory profiles and the benefit from six HA processing strategies. Material and methods, Sixty older individuals with bilateral mild-to-severe sensorineural hearing losses from a clinical population of HA users participated. Speech-in-noise stimuli were generated with the help of a HA simulator that included directional processing, noise reduction and dynamic range compression. Stimulus presentation was via headphones. Six HA settings differing in terms of signal-to-noise ratio (SNR) improvement and temporal and spectral speech distortions were selected for testing based on a comprehensive technical evaluation of different HA parameter settings. Speech-in-noise perception was assessed at fixed SNRs that were chosen based on individual speech reception threshold measurements. In addition, overall preference and noise annoyance were assessed using a multiple stimulus comparison paradigm. Results, We hypothesize that the perceptual outcomes from the six HA settings will differ across the different auditory profiles. More specifically, we expect listeners showing high sensitivity to temporal and spectral signal changes to perform best with and/or to prefer HA settings that preserve those cues. In contrast, we expect listeners showing low sensitivity to temporal and spectral signal changes to perform best with settings that maximize SNR improvement, independent of any additional signal distortions. Conclusions, We anticipate that the findings from the current study will provide the basis for the implementation of more individualized HA fitting strategies to be tested subsequently in wearable HAs. |
Wolff, Anne; Schmidt, Jesper Hvass; Houmøller, Sabina Storbjerg; Narne, Vijay; Hougaard, Dan Dupont; Gaihede, Michael; Loquet, Gérard; Hammershøi, Dorte Dansk Selskab for Otorhinolaryngologi, Hoved- & Halskirurgi, årsmøde 25-26 april 2019, 2019. @conference{DSOHH2019, title = {Self-reported Health-related Quality of Life in a cohort of Danish adults with hearing impairment before and after hearing-aid rehabilitation}, author = {Anne Wolff and Jesper Hvass Schmidt and Sabina Storbjerg Houmøller and Vijay Narne and Dan Dupont Hougaard and Michael Gaihede and Gérard Loquet and Dorte Hammershøi}, url = {http://dsohh.dk/wp-content/uploads/2019/04/Program_%C3%A5rsm%C3%B8de2019-1.pdf}, year = {2019}, date = {2019-04-26}, booktitle = {Dansk Selskab for Otorhinolaryngologi, Hoved- & Halskirurgi, årsmøde 25-26 april 2019}, abstract = {Introduction: The 15-Dimension instrument (15D) is a standardized, self-administered, generic questionnaire that provides a profile (D1-15 score) and a single index score (D15-score) as a measure of health-related quality of life (HRQoL) on a scale with a range between zero and one. Moreover, this questionnaire includes a question related to hearing (D3). When completed before and after hearing aid (HA) treatment, this questionnaire assesses the potential benefits of HA treatment on HRQoL. Method: Prospective clinical trial with HA treatment as intervention. The data were collected by means of self-reported questionnaires (15D and a basic health-related questionnaire) before and two months following HA-fitting. The study population (n=1536) comprised of both first time HA users (n=1096) and experienced HA users (n=440) enrolled in the multicenter better hearing rehabilitation (BEAR) project. Results: HA treatment resulted in improved mean score of D3 for both new (∆D3: mean, SD (0.102; 0.19) and experienced (∆D3: mean, SD (0.083; 0.20) HA users following 2 months of HA use. Patients with both “moderate to severe” and “severe” hearing loss, defined by the GBD hearing impairment classification, experienced a significant improvement in D3. Discussion: The study supports that HA usage has a positive effect on HRQoL and that HA treatment results in improved HRQoL when looking at the hearing dimension. Degree of hearing loss alone does not explain the positive effect observed. Therefore, additional parameters need to be studied in order to explain which factors are essential for patients with HL to be able to achieve an improvement of HRQoL following HA-fitting.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } Introduction: The 15-Dimension instrument (15D) is a standardized, self-administered, generic questionnaire that provides a profile (D1-15 score) and a single index score (D15-score) as a measure of health-related quality of life (HRQoL) on a scale with a range between zero and one. Moreover, this questionnaire includes a question related to hearing (D3). When completed before and after hearing aid (HA) treatment, this questionnaire assesses the potential benefits of HA treatment on HRQoL. Method: Prospective clinical trial with HA treatment as intervention. The data were collected by means of self-reported questionnaires (15D and a basic health-related questionnaire) before and two months following HA-fitting. The study population (n=1536) comprised of both first time HA users (n=1096) and experienced HA users (n=440) enrolled in the multicenter better hearing rehabilitation (BEAR) project. Results: HA treatment resulted in improved mean score of D3 for both new (∆D3: mean, SD (0.102; 0.19) and experienced (∆D3: mean, SD (0.083; 0.20) HA users following 2 months of HA use. Patients with both “moderate to severe” and “severe” hearing loss, defined by the GBD hearing impairment classification, experienced a significant improvement in D3. Discussion: The study supports that HA usage has a positive effect on HRQoL and that HA treatment results in improved HRQoL when looking at the hearing dimension. Degree of hearing loss alone does not explain the positive effect observed. Therefore, additional parameters need to be studied in order to explain which factors are essential for patients with HL to be able to achieve an improvement of HRQoL following HA-fitting. |
Bisgaard, Nikolai BEAR - A Large Scale Effort to Improve Clinical Practice Conference American Auditory Society's Scientific & Technology Meeting, February 28 - March 2, 2019, Scottsdale, Arizona, US., 2019. @conference{AAS2019, title = {BEAR - A Large Scale Effort to Improve Clinical Practice}, author = {Nikolai Bisgaard}, url = {https://aas.memberclicks.net/assets/2019_FINAL_PROGRAM.pdf}, year = {2019}, date = {2019-03-02}, booktitle = {American Auditory Society's Scientific & Technology Meeting, February 28 - March 2, 2019, Scottsdale, Arizona, US.}, abstract = {A large scale study on clinical practices and hearing aid fitting has been started in Denmark in 2016 with aim of achieving better precision in fitting and creating new improved clinical guidelines. This $ 7.5 mill. program is a joint effort by 3 Universities, 3 Danish University Hospitals, 3 Danish hearing aid manufactures and the Danish certification laboratory. The program has three phases. The first phase has three focus areas: Acquisition of 2000 patients as a reference set using current clinical practices, development of improved outcome assessment and patient profiling and new signal processing strategies adapted to the more detailed profiling. Phase two centers on validation of the new strategies, studies on subpopulations with low benefit and development of a new efficient clinical strategy. Phase three includes studies on patient driven diagnostics and fitting and revising standards for clinical practice. The presentation will give an overview of the program as well as some of the first results.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } A large scale study on clinical practices and hearing aid fitting has been started in Denmark in 2016 with aim of achieving better precision in fitting and creating new improved clinical guidelines. This $ 7.5 mill. program is a joint effort by 3 Universities, 3 Danish University Hospitals, 3 Danish hearing aid manufactures and the Danish certification laboratory. The program has three phases. The first phase has three focus areas: Acquisition of 2000 patients as a reference set using current clinical practices, development of improved outcome assessment and patient profiling and new signal processing strategies adapted to the more detailed profiling. Phase two centers on validation of the new strategies, studies on subpopulations with low benefit and development of a new efficient clinical strategy. Phase three includes studies on patient driven diagnostics and fitting and revising standards for clinical practice. The presentation will give an overview of the program as well as some of the first results. |
Wolff, Anne; Houmøller, Sabina Storbjerg; Loquet, Gérard; Schmidt, Jesper Hvass; Narne, Vijay; Gaihede, Michael; Hougaard, Dan Dupont; Hammershøi, Dorte Annual midwinter meeting in the Association for Research in Otolaryngology (Book of Abstracts), 42 (PD 163), 2019. @conference{ARO2019, title = {The Better Hearing Rehabilitation (BEAR) Study in Denmark. Study Population Characteristics and Perspectives}, author = {Anne Wolff and Sabina Storbjerg Houmøller and Gérard Loquet and Jesper Hvass Schmidt and Vijay Narne and Michael Gaihede and Dan Dupont Hougaard and Dorte Hammershøi}, url = {https://cdn.ymaws.com/www.aro.org/resource/resmgr/mwm2019/2019_aro_mwm_abstracts_final.pdf}, year = {2019}, date = {2019-02-13}, booktitle = {Annual midwinter meeting in the Association for Research in Otolaryngology (Book of Abstracts)}, volume = {42}, number = {PD 163}, pages = {719}, abstract = {A recent report from WHO noted that 360 million people in the world have hearing loss. Despite efforts to provide hearing aids (HA) to people in need, hearing loss remains an unmet need. In Denmark, for example, 20% of HA owners do not use their HA regularly which results in wasted clinical resources and a lack of rehabilitation. To improve the treatment, we propose to revise diagnostic techniques and HA fitting practices based on individual hearing profiles, set of expectations, and lifestyles. To achieve this, a cooperative project “BEAR” has been launched between three national universities, three hospitals, and the HA industry in Denmark. This resulted in the building of a database of over 30,000 patient records, collected by two audiologic departments (Aalborg and Odense, Denmark), from January 2017 until April 2018 from 1,963 hearing impaired patients. Data obtained describe procedures which are currently used in clinical audiology across Denmark and allow to explore which measures are available for each patient and what type of HA fitting they have received. Records consisted of audiometric data (air and bone conduction, uncomfortable levels, speech reception thresholds speech discrimination scores, stapedius reflex and tympanometry, Tinnitus Handicap Inventory), quality of life evaluation using questionnaires (health related quality of life [15-D], Health Related Questionnaires, Charlson Comorbidity Index), HA outcome measures using questionnaires (Speech, Spatial and Qualities of Hearing scale [SSQ-12], International Outcome Inventory for Hearing Aids [IOI-HA]) and HA fitting data (HA types, log data, fitting rationale and real-ear measurements). The database has a gender ratio of 126 males for 100 females, a mean age at 67 years (range from 19 to 100 years) and a mean hearing threshold in the better hearing ear of 40 dB HL (four frequencies average). 71.9 percent of the patients are first time HA users, as against 28.1 percent for patients with previous HA experience. Preliminary analyses show on average significant improvement in hearing abilities with HA (from IOI-HA and SSQ-12). However, substantial number of participants (18%) did not derive enough benefit from HA. Further analysis will be directed towards finding the possible reasons and grouping the participants based on HA benefit, demographic and audiological data. This will enable us to identify the areas, among contemporary standard examinations and hearing fitting strategies, which would be relevant to explore, change or further develop to provide a better HA fitting and thereby a greater user satisfaction.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } A recent report from WHO noted that 360 million people in the world have hearing loss. Despite efforts to provide hearing aids (HA) to people in need, hearing loss remains an unmet need. In Denmark, for example, 20% of HA owners do not use their HA regularly which results in wasted clinical resources and a lack of rehabilitation. To improve the treatment, we propose to revise diagnostic techniques and HA fitting practices based on individual hearing profiles, set of expectations, and lifestyles. To achieve this, a cooperative project “BEAR” has been launched between three national universities, three hospitals, and the HA industry in Denmark. This resulted in the building of a database of over 30,000 patient records, collected by two audiologic departments (Aalborg and Odense, Denmark), from January 2017 until April 2018 from 1,963 hearing impaired patients. Data obtained describe procedures which are currently used in clinical audiology across Denmark and allow to explore which measures are available for each patient and what type of HA fitting they have received. Records consisted of audiometric data (air and bone conduction, uncomfortable levels, speech reception thresholds speech discrimination scores, stapedius reflex and tympanometry, Tinnitus Handicap Inventory), quality of life evaluation using questionnaires (health related quality of life [15-D], Health Related Questionnaires, Charlson Comorbidity Index), HA outcome measures using questionnaires (Speech, Spatial and Qualities of Hearing scale [SSQ-12], International Outcome Inventory for Hearing Aids [IOI-HA]) and HA fitting data (HA types, log data, fitting rationale and real-ear measurements). The database has a gender ratio of 126 males for 100 females, a mean age at 67 years (range from 19 to 100 years) and a mean hearing threshold in the better hearing ear of 40 dB HL (four frequencies average). 71.9 percent of the patients are first time HA users, as against 28.1 percent for patients with previous HA experience. Preliminary analyses show on average significant improvement in hearing abilities with HA (from IOI-HA and SSQ-12). However, substantial number of participants (18%) did not derive enough benefit from HA. Further analysis will be directed towards finding the possible reasons and grouping the participants based on HA benefit, demographic and audiological data. This will enable us to identify the areas, among contemporary standard examinations and hearing fitting strategies, which would be relevant to explore, change or further develop to provide a better HA fitting and thereby a greater user satisfaction. |
2018 |
Nielsen, Jens Bo A test battery for predicting the real-life performance of hearing aid Conference Hearing Systems Presentation Day, DTU, Kgs. Lyngby, Denmark, 12 Oct 2018., 2018. @conference{DTU2018b, title = {A test battery for predicting the real-life performance of hearing aid}, author = {Jens Bo Nielsen}, year = {2018}, date = {2018-10-12}, booktitle = {Hearing Systems Presentation Day, DTU, Kgs. Lyngby, Denmark, 12 Oct 2018.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Lopez, Raul Sanchez Towards a profile-based hearing-aid fitting Conference Hearing Systems Presentation Day, DTU, Kgs. Lyngby, Denmark, 12 Oct 2018., 2018. @conference{DTU2018a, title = {Towards a profile-based hearing-aid fitting}, author = {Raul Sanchez Lopez}, year = {2018}, date = {2018-10-12}, booktitle = {Hearing Systems Presentation Day, DTU, Kgs. Lyngby, Denmark, 12 Oct 2018.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Hammershøi, Dorte Update på BEAR projektet Conference Invited presentation at Danish Technical Audiological Society's annual meeting, 5-6 Oct 2018. Hotel Vejlefjord, Stouby, Denmark, 2018. @conference{DTAS2018a, title = {Update på BEAR projektet}, author = {Dorte Hammershøi}, url = {http://www.dtas.dk/DTAS_Program_2018.pdf}, year = {2018}, date = {2018-10-06}, booktitle = {Invited presentation at Danish Technical Audiological Society's annual meeting, 5-6 Oct 2018. Hotel Vejlefjord, Stouby, Denmark}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Lorentzen, Line Nim; Schmidt, Jesper Hvass Poster presentation at Danish Technical Audiological Society's annual meeting, 5-6 Oct 2018. Hotel Vejlefjord, Stouby, Denmark, 2018. @conference{DTAS2018d, title = {The Danish version of the Speech, Spatial and Qualities of Hearing Scale in its abbreviated form, the SSQ12 – a study of Validation}, author = {Line Nim Lorentzen and Jesper Hvass Schmidt}, url = {http://www.dtas.dk/DTAS_Program_2018.pdf}, year = {2018}, date = {2018-10-05}, booktitle = {Poster presentation at Danish Technical Audiological Society's annual meeting, 5-6 Oct 2018. Hotel Vejlefjord, Stouby, Denmark}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Sanchez-Lopez, Raul; Bianchi, Federica; Fereczkowski, Michal; Piechowiak, Tobias; Hau, Ole; Pedersen, Michael Syskind; Behrens, Thomas; Neher, Tobias; Dau, Torsten; Santurette, Sébastien Technical evaluation of hearing-aid fitting parameters for different auditory profiles Conference Poster presentation at Danish Technical Audiological Society's annual meeting, 5-6 Oct 2018. Hotel Vejlefjord, Stouby, Denmark, 2018. @conference{DTAS2018bb, title = {Technical evaluation of hearing-aid fitting parameters for different auditory profiles}, author = {Raul Sanchez-Lopez and Federica Bianchi and Michal Fereczkowski and Tobias Piechowiak and Ole Hau and Michael Syskind Pedersen and Thomas Behrens and Tobias Neher and Torsten Dau and Sébastien Santurette}, url = {http://www.dtas.dk/DTAS_Program_2018.pdf}, year = {2018}, date = {2018-10-05}, booktitle = {Poster presentation at Danish Technical Audiological Society's annual meeting, 5-6 Oct 2018. Hotel Vejlefjord, Stouby, Denmark}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Wu, Mengfan; El-Haj-Ali, Mouhamad; Sanchez-Lopez, Raul; Fereczkowski, Michal; Bianchi, Federica; Dau, Torsten; Santurette, Sébastien; Neher, Tobias Poster presentation at Danish Technical Audiological Society's annual meeting, 5-6 Oct 2018. Hotel Vejlefjord, Stouby, Denmark, 2018. @conference{DTAS2018b, title = {Hearing aid processing strategies for listeners with different auditory profiles: Insights from the BEAR project}, author = {Mengfan Wu and Mouhamad El-Haj-Ali and Raul Sanchez-Lopez and Michal Fereczkowski and Federica Bianchi and Torsten Dau and Sébastien Santurette and Tobias Neher}, url = {http://www.dtas.dk/DTAS_Program_2018.pdf}, year = {2018}, date = {2018-10-05}, booktitle = {Poster presentation at Danish Technical Audiological Society's annual meeting, 5-6 Oct 2018. Hotel Vejlefjord, Stouby, Denmark}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Schmidt, Jesper Hvass; Lorentzen, Line Nim BEAR Conference Præsentation på Vingstedkursus for medarbejdere i hørerehabiliteringen ved kommunikationscentre 2018, 2018. @conference{Vingsted2018, title = {BEAR}, author = {Jesper Hvass Schmidt and Line Nim Lorentzen}, url = {https://centerkommunikationogvelfaerdsteknologi.regionsyddanmark.dk/wm508245}, year = {2018}, date = {2018-09-04}, booktitle = {Præsentation på Vingstedkursus for medarbejdere i hørerehabiliteringen ved kommunikationscentre 2018}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Dau, Torsten Auditory processing models and their potential application in hearing technology Conference Invited presentation at International Hearing Aid Research Conference (IHCON 2018), Lake Tahoe, California, US, 15-19 Aug 2018, (C4-0-1), 2018. @conference{IHCON2018cb, title = {Auditory processing models and their potential application in hearing technology}, author = {Torsten Dau}, url = {https://ihcon.org/files/ihcon/files/final_final_ihcon_2018_program_0.pdf}, year = {2018}, date = {2018-08-17}, booktitle = {Invited presentation at International Hearing Aid Research Conference (IHCON 2018), Lake Tahoe, California, US, 15-19 Aug 2018}, number = {C4-0-1}, pages = {52-53}, abstract = {Auditory processing models provide a powerful framework to both represent and interpret the results from a variety of experiments and to further understand the functioning of different parts of the auditory system. An important category of functional computational models seeks to capture the essential signal transformations along the auditory pathway, rather than their specific physiological substrates, and helps generate hypotheses that can be quantitatively tested for complex systems at different functional levels. These models can also help determine how a deficit in one or more functional components affects the overall operation of the system. The first part of this presentation describes some current trends in quantitative modeling of speech perception in challenging acoustic conditions, inspired by coding principles from physiology at periphery and mid-brain stages of processing. While such models can account reasonably well for speech intelligibility data from normal-hearing listeners, the prediction of data from individual hearing-impaired or aided listeners remains challenging. The second part considers compensation strategies in hearing instruments inspired by auditory models. Current compensation schemes, such as dynamic range compression, loudness compensation or speech enhancement, aim at processing the signal such that the perception of the aided signal in the hearing-impaired listener matches the perception of a normalhearing listener. While some approaches are promising, nonlinear system compensation is generally difficult to achieve in real-life situations and real-time applications. Moreover, even for the case of a purely peripheral impairment, consequences at more central stages can be manifold and complex and are typically less well understood. Current compensation strategies aim to restore peripheral processing but the restoration of cues at central stages may be equally relevant to consider. This, in turn, requires models that accurately capture such higher-level processing. Some modeling perspectives are finally described that attempt to bridge this gap between peripheral/midbrain and central processing using artificial neural network architectures. Such networks are optimized to solve real-world auditory tasks, such as speech recognition, and are currently matching the performance of human listeners. The degree to which task-optimized models can be viewed as models of the ‘real’ biological system are discussed. Overall, it is argued that the primary relevance of computational auditory signal-processing models remains the description of the transformations of the acoustical input signal into its essential ‘internal’ representations. More detailed descriptions of this process may, in turn, allow for more sophisticated hearing-aid compensation strategies to be developed.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } Auditory processing models provide a powerful framework to both represent and interpret the results from a variety of experiments and to further understand the functioning of different parts of the auditory system. An important category of functional computational models seeks to capture the essential signal transformations along the auditory pathway, rather than their specific physiological substrates, and helps generate hypotheses that can be quantitatively tested for complex systems at different functional levels. These models can also help determine how a deficit in one or more functional components affects the overall operation of the system. The first part of this presentation describes some current trends in quantitative modeling of speech perception in challenging acoustic conditions, inspired by coding principles from physiology at periphery and mid-brain stages of processing. While such models can account reasonably well for speech intelligibility data from normal-hearing listeners, the prediction of data from individual hearing-impaired or aided listeners remains challenging. The second part considers compensation strategies in hearing instruments inspired by auditory models. Current compensation schemes, such as dynamic range compression, loudness compensation or speech enhancement, aim at processing the signal such that the perception of the aided signal in the hearing-impaired listener matches the perception of a normalhearing listener. While some approaches are promising, nonlinear system compensation is generally difficult to achieve in real-life situations and real-time applications. Moreover, even for the case of a purely peripheral impairment, consequences at more central stages can be manifold and complex and are typically less well understood. Current compensation strategies aim to restore peripheral processing but the restoration of cues at central stages may be equally relevant to consider. This, in turn, requires models that accurately capture such higher-level processing. Some modeling perspectives are finally described that attempt to bridge this gap between peripheral/midbrain and central processing using artificial neural network architectures. Such networks are optimized to solve real-world auditory tasks, such as speech recognition, and are currently matching the performance of human listeners. The degree to which task-optimized models can be viewed as models of the ‘real’ biological system are discussed. Overall, it is argued that the primary relevance of computational auditory signal-processing models remains the description of the transformations of the acoustical input signal into its essential ‘internal’ representations. More detailed descriptions of this process may, in turn, allow for more sophisticated hearing-aid compensation strategies to be developed. |
Sanchez-Lopez, Raul; Fereczkowski, Michal; Bianchi, Federica; El-Haj-Ali, Mouhamad; Neher, Tobias; Dau, Torsten; Santurette, Sébastien Auditory tests for characterizing individual hearing deficits: The BEAR test battery Conference Poster at International Hearing Aid Research Conference (IHCON 2018), Lake Tahoe, California, US, 15-19 Aug 2018, (C3-P-27), 2018. @conference{IHCON2018b, title = {Auditory tests for characterizing individual hearing deficits: The BEAR test battery}, author = {Raul Sanchez-Lopez and Michal Fereczkowski and Federica Bianchi and Mouhamad El-Haj-Ali and Tobias Neher and Torsten Dau and Sébastien Santurette}, url = {https://ihcon.org/files/ihcon/files/final_final_ihcon_2018_program_0.pdf}, year = {2018}, date = {2018-08-17}, booktitle = {Poster at International Hearing Aid Research Conference (IHCON 2018), Lake Tahoe, California, US, 15-19 Aug 2018}, number = {C3-P-27}, pages = {49}, abstract = {The Better hEAring Rehabilitation (BEAR) project seeks to develop and assess new clinically feasible strategies for individualized hearing-loss diagnosis and hearing-aid fitting. The aim is to improve current clinical practice, where the fitting process relies on the pure-tone audiogram and trial-and-error methods. These usually result in inconsistent practices and patient dissatisfaction and inefficient service. Existing evidence suggests that the audiogram does not sufficiently describe supra-threshold performance of hearing-impaired listeners. Detailed characterization of hearing deficits can be complex. Therefore, one aim of the BEAR project is to design a hearing test battery for classification of listeners into a small number of auditory profiles. If successful, this BEAR test battery may be refined and reduced to form the basis for improved profile-based hearing-aid fitting protocols. Method: Based on the reanalysis of existing auditory profiling data and on criteria of their feasibility, time efficiency, and evidence from the literature, eleven potential tests for inclusion in a clinical test battery were selected. The proposed tests were divided into six categories: audibility, middle-ear analysis, speech perception, binaural-processing abilities, loudness perception, and spectro-temporal resolution. Thirty hearing-impaired listeners with symmetric mild to severe sensorineural hearing loss were selected from a clinical population of hearing-aid users. All listeners performed every test included in the battery. The participants were tested in a clinical environment and did not receive systematic training on any of the tasks. Results: The considered tests have so far shown potential for auditory profiling. The analysis of the preliminary results will focus on the ability of each test to pinpoint individual differences among the participants, interrelations among the tests, as well as their usability for the target clinical population. Importantly, a parallel study will evaluate the extent to which the outcomes of these tests can be used for hearing-aid fitting. Finally, the current test battery will be refined for implementation in clinical practice, based on the results of a data-driven analysis for auditory profiling.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } The Better hEAring Rehabilitation (BEAR) project seeks to develop and assess new clinically feasible strategies for individualized hearing-loss diagnosis and hearing-aid fitting. The aim is to improve current clinical practice, where the fitting process relies on the pure-tone audiogram and trial-and-error methods. These usually result in inconsistent practices and patient dissatisfaction and inefficient service. Existing evidence suggests that the audiogram does not sufficiently describe supra-threshold performance of hearing-impaired listeners. Detailed characterization of hearing deficits can be complex. Therefore, one aim of the BEAR project is to design a hearing test battery for classification of listeners into a small number of auditory profiles. If successful, this BEAR test battery may be refined and reduced to form the basis for improved profile-based hearing-aid fitting protocols. Method: Based on the reanalysis of existing auditory profiling data and on criteria of their feasibility, time efficiency, and evidence from the literature, eleven potential tests for inclusion in a clinical test battery were selected. The proposed tests were divided into six categories: audibility, middle-ear analysis, speech perception, binaural-processing abilities, loudness perception, and spectro-temporal resolution. Thirty hearing-impaired listeners with symmetric mild to severe sensorineural hearing loss were selected from a clinical population of hearing-aid users. All listeners performed every test included in the battery. The participants were tested in a clinical environment and did not receive systematic training on any of the tasks. Results: The considered tests have so far shown potential for auditory profiling. The analysis of the preliminary results will focus on the ability of each test to pinpoint individual differences among the participants, interrelations among the tests, as well as their usability for the target clinical population. Importantly, a parallel study will evaluate the extent to which the outcomes of these tests can be used for hearing-aid fitting. Finally, the current test battery will be refined for implementation in clinical practice, based on the results of a data-driven analysis for auditory profiling. |
Wu, Mengfan; El-Haj-Ali, Mouhamad; Sanchez-Lopez, Raul; Fereczkowski, Michal; Bianchi, Federica; Dau, Torsten; Santurette, Sébastien; Neher, Tobias Presentation at International Hearing Aid Research Conference (IHCON 2018), Lake Tahoe, California, US, 15-19 Aug 2018, (B3-0-2), 2018. @conference{IHCON2018c, title = {Hearing aid processing strategies for listeners with different auditory profiles: Insights from the BEAR project}, author = {Mengfan Wu and Mouhamad El-Haj-Ali and Raul Sanchez-Lopez and Michal Fereczkowski and Federica Bianchi and Torsten Dau and Sébastien Santurette and Tobias Neher}, url = {https://ihcon.org/files/ihcon/files/final_final_ihcon_2018_program_0.pdf}, year = {2018}, date = {2018-08-16}, booktitle = {Presentation at International Hearing Aid Research Conference (IHCON 2018), Lake Tahoe, California, US, 15-19 Aug 2018}, number = {B3-0-2}, pages = {29}, abstract = {Background: The Better hEAring Rehabilitation (BEAR) project pursues the development and evaluation of new clinically feasible strategies for individual hearing loss diagnosis and hearing aid fitting. Two essential elements of this research are the design of a new diagnostic test battery for identifying different auditory profiles and linking those profiles to hearing aid processing strategies. The current study focused on establishing links between four auditory profiles and benefit from six hearing aid processing strategies. Methods: Participants were 30 older individuals with bilateral mild-to-severe sensorineural hearing losses who were selected from a clinical population of hearing aid users. Speech-in-noise stimuli were generated with the help of a hearing aid simulator that included directional processing, noise reduction and dynamic range compression. Stimulus presentation was via headphones. Six hearing aid settings that differed in terms of signal-to-noise ratio (SNR) improvement and temporal and spectral speech distortions were selected for testing based on a comprehensive technical evaluation of different parameterisations of the hearing aid simulator. Speech-in-noise perception was assessed at fixed input SNRs that were selected based on individual speech reception threshold (SRT50) measurements. Participants were required to recognize five-word, low-context sentences embedded in two realistic noise backgrounds. In addition, overall preference and noise annoyance were assessed using a multiple stimulus comparison paradigm. Results: We hypothesize that the perceptual outcomes from the six hearing aid settings will differ across listeners with different auditory profiles. More specifically, we expect listeners showing high sensitivity to temporal and spectral differences to perform best with and/or to favour hearing aid settings that preserve those cues. In contrast, we expect listeners showing low sensitivity to temporal and spectral differences to perform best with and/or to favour settings that maximize SNR improvement, independent of any additional speech distortions. Altogether, we anticipate that these findings will provide the basis for more individualized fitting strategies to be implemented in wearable hearing aids.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } Background: The Better hEAring Rehabilitation (BEAR) project pursues the development and evaluation of new clinically feasible strategies for individual hearing loss diagnosis and hearing aid fitting. Two essential elements of this research are the design of a new diagnostic test battery for identifying different auditory profiles and linking those profiles to hearing aid processing strategies. The current study focused on establishing links between four auditory profiles and benefit from six hearing aid processing strategies. Methods: Participants were 30 older individuals with bilateral mild-to-severe sensorineural hearing losses who were selected from a clinical population of hearing aid users. Speech-in-noise stimuli were generated with the help of a hearing aid simulator that included directional processing, noise reduction and dynamic range compression. Stimulus presentation was via headphones. Six hearing aid settings that differed in terms of signal-to-noise ratio (SNR) improvement and temporal and spectral speech distortions were selected for testing based on a comprehensive technical evaluation of different parameterisations of the hearing aid simulator. Speech-in-noise perception was assessed at fixed input SNRs that were selected based on individual speech reception threshold (SRT50) measurements. Participants were required to recognize five-word, low-context sentences embedded in two realistic noise backgrounds. In addition, overall preference and noise annoyance were assessed using a multiple stimulus comparison paradigm. Results: We hypothesize that the perceptual outcomes from the six hearing aid settings will differ across listeners with different auditory profiles. More specifically, we expect listeners showing high sensitivity to temporal and spectral differences to perform best with and/or to favour hearing aid settings that preserve those cues. In contrast, we expect listeners showing low sensitivity to temporal and spectral differences to perform best with and/or to favour settings that maximize SNR improvement, independent of any additional speech distortions. Altogether, we anticipate that these findings will provide the basis for more individualized fitting strategies to be implemented in wearable hearing aids. |
Sanchez-Lopez, Raul; Fereczkowski, Michal; Bianchi, Federica; Santurette, Sébastien; Dau, Torsten Data-driven auditory profiling as a tool for defining Better hEAring Rehabilitation (BEAR) Conference Poster at International Hearing Aid Research Conference (IHCON 2018), Lake Tahoe, California, US, 15-19 Aug 2018, (B3-P-04), 2018. @conference{IHCON2018a, title = {Data-driven auditory profiling as a tool for defining Better hEAring Rehabilitation (BEAR)}, author = {Raul Sanchez-Lopez and Michal Fereczkowski and Federica Bianchi and Sébastien Santurette and Torsten Dau}, url = {https://ihcon.org/files/ihcon/files/final_final_ihcon_2018_program_0.pdf}, year = {2018}, date = {2018-08-16}, booktitle = {Poster at International Hearing Aid Research Conference (IHCON 2018), Lake Tahoe, California, US, 15-19 Aug 2018}, number = {B3-P-04}, pages = {32}, abstract = {Background: While the audiogram still stands as the main tool for selecting hearing-aid compensation strategies in audiological clinics, there is ample evidence that loss of hearing sensitivity cannot fully account for common difficulties encountered by people with sensorineural hearing loss, such as understanding speech in noisy environments. Forty years after R. Plomp proposed his attenuation-distortion model of hearing impairment, it remains a challenge to address the distortion component, mainly related to suprathreshold deficits, via adequate clinical diagnostics and corresponding hearing-aid compensation strategies. Inspired by the different auditory profiling approaches used in the literature, a major aim of the Better hEAring Rehabilitation (BEAR) project is to define a new clinical profiling tool, a test battery, for individualized hearing loss characterization. Methods: The proposed BEAR approach is based on the hypothesis that any listener’s hearing can be characterized along two dimensions reflecting largely independent types of perceptual distortions. In order to keep the approach as neutral as possible, no a priori assumption was made about the nature of the two distortion types. Instead, a statistical analysis method, combining unsupervised and supervised learning, was applied to existing data. The aim was to provide a tool to help define the two distortion types, such that potentially relevant tests for classifying listeners into different auditory profiles could be identified. So far, the data from two auditory profiling studies were reanalyzed based on this approach. First, an unsupervised-learning technique including archetypal analysis was used to identify extreme patterns in the data, forming the basis for different auditory profiles. Next, a decision tree was determined to classify the listeners into one of the profiles. Results: The data-driven analysis provided consistent evidence for the existence of two independent sources of distortion, and thus different auditory profiles, in the data. The results suggested that the first distortion type was related to loss of sensitivity at high frequencies as well as reduced peripheral compression and frequency selectivity, while the second distortion type was linked to binaural temporal-fine-structure processing abilities as well as low-frequency sensitivity loss. The audiogram was not found to reflect an independent dimension on its own, and the most informative predictors for profile identification beyond the audiogram were related to temporal processing, binaural processing, compressive peripheral nonlinearity, and speech-in-noise perception. The current approach can be used to analyze other existing data sets and may help define an optimal test battery to achieve efficient clinical auditory profiling.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } Background: While the audiogram still stands as the main tool for selecting hearing-aid compensation strategies in audiological clinics, there is ample evidence that loss of hearing sensitivity cannot fully account for common difficulties encountered by people with sensorineural hearing loss, such as understanding speech in noisy environments. Forty years after R. Plomp proposed his attenuation-distortion model of hearing impairment, it remains a challenge to address the distortion component, mainly related to suprathreshold deficits, via adequate clinical diagnostics and corresponding hearing-aid compensation strategies. Inspired by the different auditory profiling approaches used in the literature, a major aim of the Better hEAring Rehabilitation (BEAR) project is to define a new clinical profiling tool, a test battery, for individualized hearing loss characterization. Methods: The proposed BEAR approach is based on the hypothesis that any listener’s hearing can be characterized along two dimensions reflecting largely independent types of perceptual distortions. In order to keep the approach as neutral as possible, no a priori assumption was made about the nature of the two distortion types. Instead, a statistical analysis method, combining unsupervised and supervised learning, was applied to existing data. The aim was to provide a tool to help define the two distortion types, such that potentially relevant tests for classifying listeners into different auditory profiles could be identified. So far, the data from two auditory profiling studies were reanalyzed based on this approach. First, an unsupervised-learning technique including archetypal analysis was used to identify extreme patterns in the data, forming the basis for different auditory profiles. Next, a decision tree was determined to classify the listeners into one of the profiles. Results: The data-driven analysis provided consistent evidence for the existence of two independent sources of distortion, and thus different auditory profiles, in the data. The results suggested that the first distortion type was related to loss of sensitivity at high frequencies as well as reduced peripheral compression and frequency selectivity, while the second distortion type was linked to binaural temporal-fine-structure processing abilities as well as low-frequency sensitivity loss. The audiogram was not found to reflect an independent dimension on its own, and the most informative predictors for profile identification beyond the audiogram were related to temporal processing, binaural processing, compressive peripheral nonlinearity, and speech-in-noise perception. The current approach can be used to analyze other existing data sets and may help define an optimal test battery to achieve efficient clinical auditory profiling. |
Wolff, Anne; Schmidt, Jesper Hvass; Houmøller, Sabina Storbjerg; Hougaard, Dan Dupont; Gaihede, Michael; Godballe, Christian; Hammershøi, Dorte The Better Hearing Rehabilitation (BEAR) study in Denmark. Population characteristics of the hearing aid user and benefits of hearing aid treatment in the current program of hearing rehabilitation Conference Presentation at the Nordic Audiological Society, Harpa, Iceland, 6-8 June 2018., 2018. @conference{NAS2018, title = {The Better Hearing Rehabilitation (BEAR) study in Denmark. Population characteristics of the hearing aid user and benefits of hearing aid treatment in the current program of hearing rehabilitation}, author = {Anne Wolff and Jesper Hvass Schmidt and Sabina Storbjerg Houmøller and Dan Dupont Hougaard and Michael Gaihede and Christian Godballe and Dorte Hammershøi}, year = {2018}, date = {2018-06-06}, booktitle = {Presentation at the Nordic Audiological Society, Harpa, Iceland, 6-8 June 2018.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Sánchez, Raul Technical characteristics of hearing devices. Differences between hearing aids, personal sound amplifiers and hearables Conference Presentation at the XV National Congress of the Spanish Audiological Society, Toledo, Spain, May 24-26, 2018. @conference{AEDA1, title = {Technical characteristics of hearing devices. Differences between hearing aids, personal sound amplifiers and hearables}, author = {Raul Sánchez}, year = {2018}, date = {2018-05-26}, booktitle = {Presentation at the XV National Congress of the Spanish Audiological Society, Toledo, Spain, May 24-26}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Sánchez, Raul Hearing aids and hearing aid market. The limits of and scope between the clinic and supermarket. Where we are and where we are going Conference Roundtable discussion at the XV National Congress of the Spanish Association of Audiology, Toledo, Spain, May 24-26, 2018. @conference{AEDA2b, title = {Hearing aids and hearing aid market. The limits of and scope between the clinic and supermarket. Where we are and where we are going}, author = {Raul Sánchez}, year = {2018}, date = {2018-05-26}, booktitle = {Roundtable discussion at the XV National Congress of the Spanish Association of Audiology, Toledo, Spain, May 24-26}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Santurette, Sébastien; Bianchi, Federica; Dau, Torsten Effects of musical training and hearing loss on pitch discrimination Conference Proceedings of the Baltic Nordic Acoustical Meeting 2018, Reykjavik, Iceland 15-18 Apr, 2018. , 2018. @conference{BNAM2018a, title = {Effects of musical training and hearing loss on pitch discrimination}, author = {Sébastien Santurette and Federica Bianchi and Torsten Dau}, url = {https://events.artegis.com/urlhost/artegis/customers/1571/.lwtemplates/layout/default/events_public/12612//Papers/2025392_SanturetteBianchiDau_BNAM2018.pdf}, year = {2018}, date = {2018-04-15}, booktitle = {Proceedings of the Baltic Nordic Acoustical Meeting 2018, Reykjavik, Iceland 15-18 Apr, 2018. }, pages = {1-6}, abstract = {Our ability to perceive the pitch of complex sounds is essential for melody perception and for our enjoyment of music. It also plays an important role in speech perception to convey intonation and sometimes meaning, e.g., in tonal languages, and greatly helps segregation of competing sound sources. Humans are able to discriminate very small changes in the pitch of complex harmonic sounds, with fundamental frequency difference limens (F0DLs) that can be smaller than 1% of the fundamental frequency (F0). However, performance in such pitch discrimination tasks is known to depend on the harmonic content of the sound and whether the harmonics are resolved by the auditory frequency analysis operated by cochlear processing. F0DLs are also heavily influenced by the amount of musical training received by the listener and by the spectrotemporal auditory processing deficits that often accompany sensorineural hearing loss. This paper reviews the latest evidence for how musical training and hearing loss affect pitch discrimination performance, based on behavioral F0DL experiments with complex tones containing either resolved or unresolved harmonics, carried out in listeners with different degrees of hearing loss and musicianship. A better understanding of the interaction between these two factors is crucial to determine whether auditory training based on musical tasks or targeted towards specific auditory cues may be useful to hearing-impaired patients undergoing hearing rehabilitation.}, keywords = {}, pubstate = {published}, tppubtype = {conference} } Our ability to perceive the pitch of complex sounds is essential for melody perception and for our enjoyment of music. It also plays an important role in speech perception to convey intonation and sometimes meaning, e.g., in tonal languages, and greatly helps segregation of competing sound sources. Humans are able to discriminate very small changes in the pitch of complex harmonic sounds, with fundamental frequency difference limens (F0DLs) that can be smaller than 1% of the fundamental frequency (F0). However, performance in such pitch discrimination tasks is known to depend on the harmonic content of the sound and whether the harmonics are resolved by the auditory frequency analysis operated by cochlear processing. F0DLs are also heavily influenced by the amount of musical training received by the listener and by the spectrotemporal auditory processing deficits that often accompany sensorineural hearing loss. This paper reviews the latest evidence for how musical training and hearing loss affect pitch discrimination performance, based on behavioral F0DL experiments with complex tones containing either resolved or unresolved harmonics, carried out in listeners with different degrees of hearing loss and musicianship. A better understanding of the interaction between these two factors is crucial to determine whether auditory training based on musical tasks or targeted towards specific auditory cues may be useful to hearing-impaired patients undergoing hearing rehabilitation. |
Dau, Torsten From data-driven auditory profiling to scene-aware signal processing in hearing aids Conference 21st Annual Meeting of the German Audiological Society, Halle, Germany, Feb. 28 - March 3, 2018. @conference{DAGA2017b, title = {From data-driven auditory profiling to scene-aware signal processing in hearing aids}, author = {Torsten Dau}, year = {2018}, date = {2018-02-28}, booktitle = {21st Annual Meeting of the German Audiological Society, Halle, Germany, Feb. 28 - March 3}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Neher, Tobias The "Better Hearing Rehabilitation" project: Research into improved diagnostics and hearing aid treatment in Denmark Conference 21st Annual Meeting of the German Audiological Society, Halle, Germany, Feb. 28 - March 3, 2018. @conference{DAGA2018, title = {The "Better Hearing Rehabilitation" project: Research into improved diagnostics and hearing aid treatment in Denmark}, author = {Tobias Neher}, year = {2018}, date = {2018-02-28}, booktitle = {21st Annual Meeting of the German Audiological Society, Halle, Germany, Feb. 28 - March 3}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
2017 |
Nielsen, Jens Bo Et testbatteri til vurdering af høreapparatudbytte Conference Presentation of the BEAR project at Bispebjerg Hospital, 2. november, 2017. @conference{JBNBBH2017, title = {Et testbatteri til vurdering af høreapparatudbytte}, author = {Jens Bo Nielsen}, year = {2017}, date = {2017-11-02}, booktitle = {Presentation of the BEAR project at Bispebjerg Hospital, 2. november}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Santurette, Sébastien Better Hearing Rehabilitation project presentation Conference Presentation of the BEAR project at Bispebjerg Hospital, 2. november, 2017. @conference{SeSBBH2017, title = {Better Hearing Rehabilitation project presentation}, author = {Sébastien Santurette}, year = {2017}, date = {2017-11-02}, booktitle = {Presentation of the BEAR project at Bispebjerg Hospital, 2. november}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Lund, Katja Kontekstuelle interviews i audiologiske klinikker Conference Presentation of the BEAR project at Bispebjerg Hospital, 2. november, 2017. @conference{KatjaBBH2017, title = {Kontekstuelle interviews i audiologiske klinikker}, author = {Katja Lund}, year = {2017}, date = {2017-11-02}, booktitle = {Presentation of the BEAR project at Bispebjerg Hospital, 2. november}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Wolff, Anne BEAR project Conference Presentation at Dansk Medicinsk Audiologisk Selskabs årsmøde, Aalborg, Danmark, 27. oktober, 2017. @conference{DMAS2017, title = {BEAR project}, author = {Anne Wolff }, year = {2017}, date = {2017-10-27}, booktitle = {Presentation at Dansk Medicinsk Audiologisk Selskabs årsmøde, Aalborg, Danmark, 27. oktober}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Nielsen, Jens Bo A test battery for predicting the real-life performance of hearing aid users Conference Poster presented at Hearing Systems presentation day, Kgs. Lyngby, Denmark, 12 October, 2017. @conference{DTU2017b, title = {A test battery for predicting the real-life performance of hearing aid users}, author = {Jens Bo Nielsen}, year = {2017}, date = {2017-10-12}, booktitle = {Poster presented at Hearing Systems presentation day, Kgs. Lyngby, Denmark, 12 October}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Lopez, Raul Sanchez Auditory profiling through computational data analysis Conference Presentation at Hearing Systems presentation day, Kgs. Lyngby, Denmark, 12 October, 2017. @conference{DTU2017, title = {Auditory profiling through computational data analysis}, author = {Raul Sanchez Lopez}, year = {2017}, date = {2017-10-12}, booktitle = {Presentation at Hearing Systems presentation day, Kgs. Lyngby, Denmark, 12 October}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Lopez, Raul Sanchez; Bianchi, Federica; Fereczkowski, Michal; Santurette, Sébastien; Dau, Torsten An extended test battery for characterizing hearing deficits Conference Dansk Teknisk Audiologisk Årsmøde, Vejle, Danmark, 9-10 september, 2017. @conference{RaulDTAS2017, title = {An extended test battery for characterizing hearing deficits}, author = {Raul Sanchez Lopez and Federica Bianchi and Michal Fereczkowski and Sébastien Santurette and Torsten Dau }, year = {2017}, date = {2017-09-09}, booktitle = {Dansk Teknisk Audiologisk Årsmøde, Vejle, Danmark, 9-10 september}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Dau, Torsten Bridging the gap from sound processors to brain processors Conference “High-Tech Summit” Copenhagen 2017 – Empowering Society and Creating Value” Conference at the Technical University of Denmark, 1. September, 2017. @conference{high-tech2017, title = {Bridging the gap from sound processors to brain processors}, author = {Torsten Dau}, year = {2017}, date = {2017-09-01}, booktitle = {“High-Tech Summit” Copenhagen 2017 – Empowering Society and Creating Value” Conference at the Technical University of Denmark, 1. September}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Houmøller, Sabina Storbjerg; Wolff, Anne; Hougaard, Dan Dupont; Hammershøi, Dorte; Godballe, Christian; Schmidt, Jesper Hvass BEAR: A status on population characteristics of hearing-aid users obtained from the database Conference ISAAR 2017 Adaptive Processes in Hearing, (P.20), 2017. @conference{SabinaISAAR2017, title = {BEAR: A status on population characteristics of hearing-aid users obtained from the database}, author = {Sabina Storbjerg Houmøller and Anne Wolff and Dan Dupont Hougaard and Dorte Hammershøi and Christian Godballe and Jesper Hvass Schmidt}, year = {2017}, date = {2017-08-23}, booktitle = {ISAAR 2017 Adaptive Processes in Hearing}, number = {P.20}, pages = {126}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Lopez, Raul Sanchez; Bianchi, Federica; Fereczkowski, Michal; Santurette, Sébastien; Dau, Torsten Auditory profiling through computational data analysis Conference Poster presented at the 1st International Workshop on Challenges in Hearing Assistive Technology (CHAT-2017), Stockholm, Sweden, 2017. @conference{CHAT2017, title = {Auditory profiling through computational data analysis}, author = {Raul Sanchez Lopez and Federica Bianchi and Michal Fereczkowski and Sébastien Santurette and Torsten Dau}, year = {2017}, date = {2017-08-19}, booktitle = {Poster presented at the 1st International Workshop on Challenges in Hearing Assistive Technology (CHAT-2017), Stockholm, Sweden}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Wolff, Anne; Houmøller, Sabina Storbjerg; Gaihede, Michael; Hougaard, Dan Dupont; Schmidt, Jesper Hvass; Hammershøi, Dorte Predictive factors for successful hearing aid treatment with special focus on health related quality of life and asymmetric hearing Conference XIV Årsmøde i Dansk Selskab for Otorhinolaryngologi, Hoved- & Halskirurgi, Nyborg, Danmark, 2017. @conference{DSOHH2017, title = {Predictive factors for successful hearing aid treatment with special focus on health related quality of life and asymmetric hearing}, author = {Anne Wolff and Sabina Storbjerg Houmøller and Michael Gaihede and Dan Dupont Hougaard and Jesper Hvass Schmidt and Dorte Hammershøi}, year = {2017}, date = {2017-04-20}, booktitle = {XIV Årsmøde i Dansk Selskab for Otorhinolaryngologi, Hoved- & Halskirurgi, Nyborg, Danmark}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Hammershøi, Dorte Høreapparater på en helt ny måde Conference IDA Universe temadag, København, Danmark, 2017. @conference{IDAUcph2017, title = {Høreapparater på en helt ny måde}, author = {Dorte Hammershøi }, year = {2017}, date = {2017-04-19}, booktitle = {IDA Universe temadag, København, Danmark}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Wolff, Anne; Houmøller, Sabina Storbjerg; Gaihede, Michael; Hougaard, Dan Dupont; Hammershøi, Dorte National Better hEAring Rehabilitation (BEAR) project: A status on the database with special focus on patients’ motivation on hearing aid treatment Conference ISAAR 2017 Adaptive Processes in Hearing, (P.55), 2017. @conference{AnneISAAR2017, title = {National Better hEAring Rehabilitation (BEAR) project: A status on the database with special focus on patients’ motivation on hearing aid treatment}, author = {Anne Wolff and Sabina Storbjerg Houmøller and Michael Gaihede and Dan Dupont Hougaard and Dorte Hammershøi}, year = {2017}, date = {2017-01-01}, booktitle = {ISAAR 2017 Adaptive Processes in Hearing}, number = {P.55}, pages = {196}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
2016 |
Lopez, Raul Sanchez; Bianchi, Federica; Santurette, Sébastien; Dau, Torsten Archetypal analysis of auditory profiling data towards a clinical test battery Conference Poster presented at ARCHES/ICANHEAR 21-23 Nov 2016, Zurich, Switzerland, (AP-10), 2016. @conference{Lopez2016, title = {Archetypal analysis of auditory profiling data towards a clinical test battery}, author = {Raul Sanchez Lopez and Federica Bianchi and Sébastien Santurette and Torsten Dau}, url = {https://www.uzh.ch/orl/Sanchez.pdf}, year = {2016}, date = {2016-11-21}, booktitle = {Poster presented at ARCHES/ICANHEAR 21-23 Nov 2016, Zurich, Switzerland}, number = {AP-10}, abstract = {Nowadays, the pure-tone audiogram is the main tool used to characterize the degree of hearing loss and for hearing-aid fitting. However, the perceptual consequences of hearing loss are typically associated not only to a loss of sensitivity, but also to a loss of clarity (distortions) that is not captured by the audiogram. Here, we hypothesize that any listener’s hearing can be characterized along two dimensions: audibility-related and nonaudibility-related distortions. In this space, four profiles can be identified: normalhearing, sensitivity loss, hearing loss with clarity loss and normal-hearing with clarity loss (hidden hearing loss). Recently, Thorup et al. (2016) proposed an extended auditory profile beyond the audiogram for hearing aid candidates. A new analysis of these data using archetypal analysis is presented here to evaluate our hypothesis. This technique uses unsupervised learning for identifying extreme patterns in the data, which would correspond to different profiles. Results provided consistent evidence of the existence of different “Auditory Profiles” in the data. The most sensitive tests for the classification of the hearing-impaired listeners were related to temporal processing, loudness, cognition, and speech perception. The current approach seems promising for analyzing other existing data sets in order to select the most relevant tests for auditory profiling. }, keywords = {}, pubstate = {published}, tppubtype = {conference} } Nowadays, the pure-tone audiogram is the main tool used to characterize the degree of hearing loss and for hearing-aid fitting. However, the perceptual consequences of hearing loss are typically associated not only to a loss of sensitivity, but also to a loss of clarity (distortions) that is not captured by the audiogram. Here, we hypothesize that any listener’s hearing can be characterized along two dimensions: audibility-related and nonaudibility-related distortions. In this space, four profiles can be identified: normalhearing, sensitivity loss, hearing loss with clarity loss and normal-hearing with clarity loss (hidden hearing loss). Recently, Thorup et al. (2016) proposed an extended auditory profile beyond the audiogram for hearing aid candidates. A new analysis of these data using archetypal analysis is presented here to evaluate our hypothesis. This technique uses unsupervised learning for identifying extreme patterns in the data, which would correspond to different profiles. Results provided consistent evidence of the existence of different “Auditory Profiles” in the data. The most sensitive tests for the classification of the hearing-impaired listeners were related to temporal processing, loudness, cognition, and speech perception. The current approach seems promising for analyzing other existing data sets in order to select the most relevant tests for auditory profiling. |
Lopez, Raul Sanchez; Fereczkowski, Michal; Santurette, Sébastien; Dau, Torsten Poster presented at Danish Technical Audiological Society's annual meeting, 9-10 Sep 2016, Hotel Vejlefjord, Stouby, Denmark, 2016. @conference{57d1c0d07c8542ea9ab3c8c59714189a, title = {Spectro-temporal modulation sensitivity and discrimination in normal hearing and hearing-impaired listeners}, author = {Raul Sanchez Lopez and Michal Fereczkowski and Sébastien Santurette and Torsten Dau}, url = {http://www.dtas.dk/program2016.pdf}, year = {2016}, date = {2016-09-09}, booktitle = {Poster presented at Danish Technical Audiological Society's annual meeting, 9-10 Sep 2016, Hotel Vejlefjord, Stouby, Denmark}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Ravn, Gert BEAR projektet: Optimering af høreapparater - hvad kan vi gøre? Conference Invited presentation at Danish Technical Audiological Society's annual meeting, 9-10 Sep 2016, Hotel Vejlefjord, Stouby, Denmark, 2016. @conference{GertDTAS2016, title = {BEAR projektet: Optimering af høreapparater - hvad kan vi gøre?}, author = {Gert Ravn}, url = {http://www.dtas.dk/program2016.pdf}, year = {2016}, date = {2016-09-09}, booktitle = {Invited presentation at Danish Technical Audiological Society's annual meeting, 9-10 Sep 2016, Hotel Vejlefjord, Stouby, Denmark}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
0202 |
Fereczkowski, Michal; Neher, Tobias Oral presentation at the International Symposium on Auditory and Audiological Research: Vol 8: The Auditory System Throughout Life – Models, Mechanisms, and Interventions, 0202. @inproceedings{Michal2_ISAAR2021, title = {Maximum aided word recognition score and rollover presence at higher-than-normal speech levels predict hearing-aid outcome effectively}, author = {Michal Fereczkowski and Tobias Neher}, url = {https://isaar.eu/wp-content/uploads/2021/08/Programme-book-ISAAR-2021.pdf}, year = {0202}, date = {0202-08-25}, booktitle = {Oral presentation at the International Symposium on Auditory and Audiological Research: Vol 8: The Auditory System Throughout Life – Models, Mechanisms, and Interventions}, keywords = {}, pubstate = {published}, tppubtype = {inproceedings} } |
Universitetshospitaler
Odense Universitetshospital
Rikke Schnack-Petersen
rikke.schnack-petersen@rsyd.dk
Aalborg Universitetshospital
Michael Gaihede
mlg@rn.dk
Københavns Universitetshospital
Jesper Borchorst Yde
jesper.borchorst.yde.01@regionh.dk
Universiteter
Syddansk Universitet
Jesper Hvass Schmidt
jesper.schmidt@rsyd.dk
Aalborg Universitet
Dorte Hammershøi
dh@es.aau.dk
Danmarks Tekniske Universitet
Torsten Dau
tdau@dtu.dk
GTS
Industri
Oticon
Karen Wibling Solgård
kaws@oticon.dk
GN Resound
Nikolai Bisgaard
nbisgaard@gnresound.com
WSAudiology
Filip Marchman Rønne
filip.roenne@wsa.com
