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J Am Acad Audiol 2022; 33(03): 170-180
DOI: 10.1055/a-1678-3381
Research Article

Influence of Audibility and Distortion on Recognition of Reverberant Speech for Children and Adults with Hearing Aid Amplification

Marc A. Brennan
1   Department of Special Education and Communication Disorders, University of Nebraska-Lincoln, Lincoln, Nebraska
,
Ryan W. McCreery
2   Center for Hearing Research, Boys Town National Research Hospital, Omaha, Nebraska
,
John Massey
3   Florida Ear and Sinus Center, Silverstein Institute, Sarasota, Florida
› Institutsangaben
Funding Portions of this work were funded by the Nebraska Tobacco Settlement Biomedical Research Development Fund (principal investigator Marc A. Brennan), NIDCD grants T35 DC008757 (Boys Town National Research Hospital), P30 DC4662 (Boys Town National Research Hospital), P20 GM109023 (principal investigator Marc A. Brennan), R01 DC013591 (principal investigator Ryan W. McCreery).
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Abstract

Background Adults and children with sensorineural hearing loss (SNHL) have trouble understanding speech in rooms with reverberation when using hearing aid amplification. While the use of amplitude compression signal processing in hearing aids may contribute to this difficulty, there is conflicting evidence on the effects of amplitude compression settings on speech recognition. Less clear is the effect of a fast release time for adults and children with SNHL when using compression ratios derived from a prescriptive procedure.

Purpose The aim of the study is to determine whether release time impacts speech recognition in reverberation for children and adults with SNHL and to determine if these effects of release time and reverberation can be predicted using indices of audibility or temporal and spectral distortion.

Research Design This is a quasi-experimental cohort study. Participants used a hearing aid simulator set to the Desired Sensation Level algorithm m[i/o] for three different amplitude compression release times. Reverberation was simulated using three different reverberation times.

Participants Participants were 20 children and 16 adults with SNHL.

Data Collection and Analyses Participants were seated in a sound-attenuating booth and then nonsense syllable recognition was measured. Predictions of speech recognition were made using indices of audibility, temporal distortion, and spectral distortion and the effects of release time and reverberation were analyzed using linear mixed models.

Results While nonsense syllable recognition decreased in reverberation release time did not significantly affect nonsense syllable recognition. Participants with lower audibility were more susceptible to the negative effect of reverberation on nonsense syllable recognition.

Conclusion We have extended previous work on the effects of reverberation on aided speech recognition to children with SNHL. Variations in release time did not impact the understanding of speech. An index of audibility best predicted nonsense syllable recognition in reverberation and, clinically, these results suggest that patients with less audibility are more susceptible to nonsense syllable recognition in reverberation.

Keywords

hearing loss - hearing aids - speech perception - adults and children

Authors' note

This work was presented at the Annual Meeting of the American Auditory Society in March of 2018.


Disclaimer

Any mention of a product, service, or procedure in the Journal of the American Academy of Audiology does not constitute an endorsement of the product, service, or procedure by the American Academy of Audiology.




Publikationsverlauf

Eingereicht: 14. September 2020

Angenommen: 21. Oktober 2021

Accepted Manuscript online:
25. Oktober 2021

Artikel online veröffentlicht:
10. Oktober 2022

© 2022. American Academy of Audiology. This article is published by Thieme.

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