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Paper Abstract and Keywords
Presentation 2026-06-05 14:00
[Poster Presentation] Separating peripheral hearing loss from higher-level effects in speech intelligibility of older adults
Toshio Irino (Wakayama Univ./ Univ. Electro-Comm.), Ayako Yamamoto, Fuki Miyazaki (Wakayama Univ.) SP2026-13
Abstract (in Japanese) (See Japanese page) 
(in English) Age-related hearing loss (HL) reduces speech intelligibility (SI) in older adults (OAs), but deficits in central and cognitive processing also substantially impact SI. Understanding these contributions is essential for explaining individual differences and developing effective assistive hearing strategies. This study presents a framework that distinguishes peripheral HL from central and cognitive influences on SI by combining the Hearing loss simulator WHIS and the objective intelligibility measure GESI.
Speech-in-noise tests were conducted with young normal-hearing listeners (YNHs) using WHIS to simulate the audiogram of a target OA. The target OA achieved SI scores comparable to or higher than those of YNHs with simulated HL, suggesting contributions beyond peripheral hearing function. GESI was then used to predict SI scores for YNHs and OAs across different hearing levels. Prediction accuracy was comparable between groups, while many OAs showed subjective SI scores higher than predicted using parameters derived from YNHs. Moreover, residual differences between subjective and predicted SI were not correlated with hearing levels, indicating that peripheral HL effects were effectively absorbed by GESI. The proposed framework allows systematic examination of central and cognitive factors beyond peripheral HL across individual listeners.
Keyword (in Japanese) (See Japanese page) 
(in English) Speech intelligibility / Objective intelligibility measure / Age-related hearing loss / Presbycusis / Hearing loss simulator / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 58, SP2026-13, pp. 71-78, June 2026.
Paper # SP2026-13 
Date of Issue 2026-05-29 (SP) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF SP2026-13

Conference Information
Committee SP IPSJ-SLP IPSJ-MUS  
Conference Date 2026-06-05 - 2026-06-06 
Place (in Japanese) (See Japanese page) 
Place (in English) The University of Electro-Communications 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SP 
Conference Code 2026-06-SP-SLP-MUS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Separating peripheral hearing loss from higher-level effects in speech intelligibility of older adults 
Sub Title (in English)  
Keyword(1) Speech intelligibility  
Keyword(2) Objective intelligibility measure  
Keyword(3) Age-related hearing loss  
Keyword(4) Presbycusis  
Keyword(5) Hearing loss simulator  
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1st Author's Name Toshio Irino  
1st Author's Affiliation Wakayama University/The University of Electro-Communications (Wakayama Univ./ Univ. Electro-Comm.)
2nd Author's Name Ayako Yamamoto  
2nd Author's Affiliation Wakayama University (Wakayama Univ.)
3rd Author's Name Fuki Miyazaki  
3rd Author's Affiliation Wakayama University (Wakayama Univ.)
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Speaker Author-1 
Date Time 2026-06-05 14:00:00 
Presentation Time 180 minutes 
Registration for SP 
Paper # SP2026-13 
Volume (vol) vol.126 
Number (no) no.58 
Page pp.71-78 
#Pages 8 
Date of Issue 2026-05-29 (SP) 

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