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Effect of Compression Release Time of a Hearing Aid on Sentence Recognition and the Quality Judgment of Speech

CONTEXT: The sentence recognition score and quality of speech differ when hearing aid compression is set at different release times at different signal to noise ratios (SNRs) for the normal and compressed rate of sentences. AIMS: To investigate the effect of amplitude-compression release time of a h...

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Autores principales: Shetty, Hemanth Narayan, Raju, Suma
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Wolters Kluwer - Medknow 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7986454/
https://www.ncbi.nlm.nih.gov/pubmed/32978360
http://dx.doi.org/10.4103/nah.NAH_54_19
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author Shetty, Hemanth Narayan
Raju, Suma
author_facet Shetty, Hemanth Narayan
Raju, Suma
author_sort Shetty, Hemanth Narayan
collection PubMed
description CONTEXT: The sentence recognition score and quality of speech differ when hearing aid compression is set at different release times at different signal to noise ratios (SNRs) for the normal and compressed rate of sentences. AIMS: To investigate the effect of amplitude-compression release time of a hearing aid on sentence recognition and quality judgment: (1) for normal rate and time-compressed sentences (2) in quiet and noisy conditions. SETTINGS AND DESIGN: A post-test repeated measures design. METHODS AND MATERIAL: We recruited fifteen adult participants with bilateral sensorineural hearing loss in each group, the younger (35–45 years), and the older ones (60–70 years). A gap detection test assessed temporal processing ability. We used three compression settings, fast-acting, slow-acting, and linear. Sentence recognition and quality and envelope difference index in normal and altered rates were assessed in quiet and in noise at these three compression settings. STATISTICAL ANALYSIS USED: A repeated measure ANOVA. RESULTS: We found a significant improvement in recognition of sentences at a normal rate in slow compression release time, compared to fast and linear gain settings at each SNR. Similar results were observed for sentences compressed at the rate of 35% in quiet and +10 dB SNR. Further, the participants preferred the quality of speech in quiet with the hearing aid set to slow compared to fast compression release time. The benefit from the slow compression release time was higher than either linear or fast compression release time on sentence recognition. Further, we saw that there was a negative impact on sentence recognition at 3 dB SNR (normal-rate) and in quiet (35% compression rate) in older adults. CONCLUSIONS: The slow compression release time in a hearing aid is superior to the fast one in noisy conditions and also with higher subjective ratings of speech quality in quiet.
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spelling pubmed-79864542021-04-19 Effect of Compression Release Time of a Hearing Aid on Sentence Recognition and the Quality Judgment of Speech Shetty, Hemanth Narayan Raju, Suma Noise Health Original Article CONTEXT: The sentence recognition score and quality of speech differ when hearing aid compression is set at different release times at different signal to noise ratios (SNRs) for the normal and compressed rate of sentences. AIMS: To investigate the effect of amplitude-compression release time of a hearing aid on sentence recognition and quality judgment: (1) for normal rate and time-compressed sentences (2) in quiet and noisy conditions. SETTINGS AND DESIGN: A post-test repeated measures design. METHODS AND MATERIAL: We recruited fifteen adult participants with bilateral sensorineural hearing loss in each group, the younger (35–45 years), and the older ones (60–70 years). A gap detection test assessed temporal processing ability. We used three compression settings, fast-acting, slow-acting, and linear. Sentence recognition and quality and envelope difference index in normal and altered rates were assessed in quiet and in noise at these three compression settings. STATISTICAL ANALYSIS USED: A repeated measure ANOVA. RESULTS: We found a significant improvement in recognition of sentences at a normal rate in slow compression release time, compared to fast and linear gain settings at each SNR. Similar results were observed for sentences compressed at the rate of 35% in quiet and +10 dB SNR. Further, the participants preferred the quality of speech in quiet with the hearing aid set to slow compared to fast compression release time. The benefit from the slow compression release time was higher than either linear or fast compression release time on sentence recognition. Further, we saw that there was a negative impact on sentence recognition at 3 dB SNR (normal-rate) and in quiet (35% compression rate) in older adults. CONCLUSIONS: The slow compression release time in a hearing aid is superior to the fast one in noisy conditions and also with higher subjective ratings of speech quality in quiet. Wolters Kluwer - Medknow 2019 2020-09-18 /pmc/articles/PMC7986454/ /pubmed/32978360 http://dx.doi.org/10.4103/nah.NAH_54_19 Text en Copyright: © 2020 Noise & Health http://creativecommons.org/licenses/by-nc-sa/4.0 This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.
spellingShingle Original Article
Shetty, Hemanth Narayan
Raju, Suma
Effect of Compression Release Time of a Hearing Aid on Sentence Recognition and the Quality Judgment of Speech
title Effect of Compression Release Time of a Hearing Aid on Sentence Recognition and the Quality Judgment of Speech
title_full Effect of Compression Release Time of a Hearing Aid on Sentence Recognition and the Quality Judgment of Speech
title_fullStr Effect of Compression Release Time of a Hearing Aid on Sentence Recognition and the Quality Judgment of Speech
title_full_unstemmed Effect of Compression Release Time of a Hearing Aid on Sentence Recognition and the Quality Judgment of Speech
title_short Effect of Compression Release Time of a Hearing Aid on Sentence Recognition and the Quality Judgment of Speech
title_sort effect of compression release time of a hearing aid on sentence recognition and the quality judgment of speech
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7986454/
https://www.ncbi.nlm.nih.gov/pubmed/32978360
http://dx.doi.org/10.4103/nah.NAH_54_19
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