TY - JOUR
T1 - Validation of a Self-Fitting Method for Over-the-Counter Hearing Aids
AU - Sabin, Andrew T.
AU - Van Tasell, Dianne J.
AU - Rabinowitz, Bill
AU - Dhar, Sumitrajit
N1 - Funding Information:
The authors disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: Funding was provided by the National Institute on Deafness and Other Communication Disorders grant number R44DC013093 to Ear Machine LLC, subsequently transferred to Bose Corporation. The research was conducted under a subcontract to Northwestern University by Bose Corporation. S. D. was the principal investigator at Northwestern. All recruiting, testing, and reporting procedures were reviewed and approved by the Institutional Review Board of Northwestern University.
Publisher Copyright:
© The Author(s) 2020.
PY - 2020
Y1 - 2020
N2 - In common practice, hearing aids are fitted by a clinician who measures an audiogram and uses it to generate prescriptive gain and output targets. This report describes an alternative method where users select their own signal processing parameters using an interface consisting of two wheels that optimally map to simultaneous control of gain and compression in each frequency band. The real-world performance of this approach was evaluated via a take-home field trial. Participants with hearing loss were fitted using clinical best practices (audiogram, fit to target, real-ear verification, and subsequent fine tuning). Then, in their everyday lives over the course of a month, participants either selected their own parameters using this new interface (Self group; n = 38) or used the parameters selected by the clinician with limited control (Audiologist Best Practices Group; n = 37). On average, the gain selected by the Self group was within 1.8 dB overall and 5.6 dB per band of that selected by the audiologist. Participants in the Self group reported better sound quality than did those in the Audiologist Best Practices group. In blind sound quality comparisons conducted in the field, participants in the Self group slightly preferred the parameters they selected over those selected by the clinician. Finally, there were no differences between groups in terms of standard clinical measures of hearing aid benefit or speech perception in noise. Overall, the results indicate that it is possible for users to select effective amplification parameters by themselves using a simple interface that maps to key hearing aid signal processing parameters.
AB - In common practice, hearing aids are fitted by a clinician who measures an audiogram and uses it to generate prescriptive gain and output targets. This report describes an alternative method where users select their own signal processing parameters using an interface consisting of two wheels that optimally map to simultaneous control of gain and compression in each frequency band. The real-world performance of this approach was evaluated via a take-home field trial. Participants with hearing loss were fitted using clinical best practices (audiogram, fit to target, real-ear verification, and subsequent fine tuning). Then, in their everyday lives over the course of a month, participants either selected their own parameters using this new interface (Self group; n = 38) or used the parameters selected by the clinician with limited control (Audiologist Best Practices Group; n = 37). On average, the gain selected by the Self group was within 1.8 dB overall and 5.6 dB per band of that selected by the audiologist. Participants in the Self group reported better sound quality than did those in the Audiologist Best Practices group. In blind sound quality comparisons conducted in the field, participants in the Self group slightly preferred the parameters they selected over those selected by the clinician. Finally, there were no differences between groups in terms of standard clinical measures of hearing aid benefit or speech perception in noise. Overall, the results indicate that it is possible for users to select effective amplification parameters by themselves using a simple interface that maps to key hearing aid signal processing parameters.
KW - hearing aid benefit
KW - hearing aids
KW - over-the-counter hearing aids
KW - self-fitting hearing aids
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U2 - 10.1177/2331216519900589
DO - 10.1177/2331216519900589
M3 - Article
C2 - 32003285
AN - SCOPUS:85078713811
VL - 24
JO - Trends in hearing
JF - Trends in hearing
SN - 1084-7138
ER -