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Differential weighting of temporal envelope cues from the low-frequency region for Mandarin sentence recognition in noise

BACKGROUND: Temporal envelope cues are conveyed by cochlear implants (CIs) to hearing loss patients to restore hearing. Although CIs could enable users to communicate in clear listening environments, noisy environments still pose a problem. To improve speech-processing strategies used in Chinese CIs...

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Autores principales: Guo, Yang, Zheng, Zhong, Li, Keyi, Sun, Yuanyuan, Xia, Liang, Qian, Di, Feng, Yanmei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9190152/
https://www.ncbi.nlm.nih.gov/pubmed/35698039
http://dx.doi.org/10.1186/s12868-022-00721-z
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author Guo, Yang
Zheng, Zhong
Li, Keyi
Sun, Yuanyuan
Xia, Liang
Qian, Di
Feng, Yanmei
author_facet Guo, Yang
Zheng, Zhong
Li, Keyi
Sun, Yuanyuan
Xia, Liang
Qian, Di
Feng, Yanmei
author_sort Guo, Yang
collection PubMed
description BACKGROUND: Temporal envelope cues are conveyed by cochlear implants (CIs) to hearing loss patients to restore hearing. Although CIs could enable users to communicate in clear listening environments, noisy environments still pose a problem. To improve speech-processing strategies used in Chinese CIs, we explored the relative contributions made by the temporal envelope in various frequency regions, as relevant to Mandarin sentence recognition in noise. METHODS: Original speech material from the Mandarin version of the Hearing in Noise Test (MHINT) was mixed with speech-shaped noise (SSN), sinusoidally amplitude-modulated speech-shaped noise (SAM SSN), and sinusoidally amplitude-modulated (SAM) white noise (4 Hz) at a + 5 dB signal-to-noise ratio, respectively. Envelope information of the noise-corrupted speech material was extracted from 30 contiguous bands that were allocated to five frequency regions. The intelligibility of the noise-corrupted speech material (temporal cues from one or two regions were removed) was measured to estimate the relative weights of temporal envelope cues from the five frequency regions. RESULTS: In SSN, the mean weights of Regions 1–5 were 0.34, 0.19, 0.20, 0.16, and 0.11, respectively; in SAM SSN, the mean weights of Regions 1–5 were 0.34, 0.17, 0.24, 0.14, and 0.11, respectively; and in SAM white noise, the mean weights of Regions 1–5 were 0.46, 0.24, 0.22, 0.06, and 0.02, respectively. CONCLUSIONS: The results suggest that the temporal envelope in the low-frequency region transmits the greatest amount of information in terms of Mandarin sentence recognition for three types of noise, which differed from the perception strategy employed in clear listening environments. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12868-022-00721-z.
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spelling pubmed-91901522022-06-14 Differential weighting of temporal envelope cues from the low-frequency region for Mandarin sentence recognition in noise Guo, Yang Zheng, Zhong Li, Keyi Sun, Yuanyuan Xia, Liang Qian, Di Feng, Yanmei BMC Neurosci Research BACKGROUND: Temporal envelope cues are conveyed by cochlear implants (CIs) to hearing loss patients to restore hearing. Although CIs could enable users to communicate in clear listening environments, noisy environments still pose a problem. To improve speech-processing strategies used in Chinese CIs, we explored the relative contributions made by the temporal envelope in various frequency regions, as relevant to Mandarin sentence recognition in noise. METHODS: Original speech material from the Mandarin version of the Hearing in Noise Test (MHINT) was mixed with speech-shaped noise (SSN), sinusoidally amplitude-modulated speech-shaped noise (SAM SSN), and sinusoidally amplitude-modulated (SAM) white noise (4 Hz) at a + 5 dB signal-to-noise ratio, respectively. Envelope information of the noise-corrupted speech material was extracted from 30 contiguous bands that were allocated to five frequency regions. The intelligibility of the noise-corrupted speech material (temporal cues from one or two regions were removed) was measured to estimate the relative weights of temporal envelope cues from the five frequency regions. RESULTS: In SSN, the mean weights of Regions 1–5 were 0.34, 0.19, 0.20, 0.16, and 0.11, respectively; in SAM SSN, the mean weights of Regions 1–5 were 0.34, 0.17, 0.24, 0.14, and 0.11, respectively; and in SAM white noise, the mean weights of Regions 1–5 were 0.46, 0.24, 0.22, 0.06, and 0.02, respectively. CONCLUSIONS: The results suggest that the temporal envelope in the low-frequency region transmits the greatest amount of information in terms of Mandarin sentence recognition for three types of noise, which differed from the perception strategy employed in clear listening environments. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12868-022-00721-z. BioMed Central 2022-06-13 /pmc/articles/PMC9190152/ /pubmed/35698039 http://dx.doi.org/10.1186/s12868-022-00721-z Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/ (https://creativecommons.org/publicdomain/zero/1.0/) ) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
spellingShingle Research
Guo, Yang
Zheng, Zhong
Li, Keyi
Sun, Yuanyuan
Xia, Liang
Qian, Di
Feng, Yanmei
Differential weighting of temporal envelope cues from the low-frequency region for Mandarin sentence recognition in noise
title Differential weighting of temporal envelope cues from the low-frequency region for Mandarin sentence recognition in noise
title_full Differential weighting of temporal envelope cues from the low-frequency region for Mandarin sentence recognition in noise
title_fullStr Differential weighting of temporal envelope cues from the low-frequency region for Mandarin sentence recognition in noise
title_full_unstemmed Differential weighting of temporal envelope cues from the low-frequency region for Mandarin sentence recognition in noise
title_short Differential weighting of temporal envelope cues from the low-frequency region for Mandarin sentence recognition in noise
title_sort differential weighting of temporal envelope cues from the low-frequency region for mandarin sentence recognition in noise
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9190152/
https://www.ncbi.nlm.nih.gov/pubmed/35698039
http://dx.doi.org/10.1186/s12868-022-00721-z
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