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Paper Abstract and Keywords
Presentation 2025-12-19 14:20
Effects of interaural level and time difference adjustment on sound field synthesis in beamforming-based binaural reproduction
Daichi Taura, Kanji Watanabe, Masayuki Nishiguchi, Koji Abe (Akita Prefectual Univ.) EA2025-71
Abstract (in Japanese) (See Japanese page) 
(in English) In this study, we investigate a system that virtually reproduces a sound space by capturing directional sound signals with beamforming and convolving the resulting signals with corresponding Head-Related Transfer Functions (HRTFs) to synthesize the signals for each ear.Previous studies have indicated that spatial reproduction accuracy is insufficient in the high-frequency range. Separately from this, our previous study suggested that considering interaural signal differences is effective and could improve perceptual accuracy. Therefore, in this report, we investigate a method that applies compensation to beamformed signals to reproduce the interaural level difference (ILD) and interaural time difference (ITD) of the original sound field. The results of both objective and subjective evaluations demonstrated that localization accuracy was improved without degrading the timbre.
Keyword (in Japanese) (See Japanese page) 
(in English) Beamforming / Sound field reproduction / Least-squares method / Interaural level difference(ILD) / Interaural time difference(ITD) / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 300, EA2025-71, pp. 64-69, Dec. 2025.
Paper # EA2025-71 
Date of Issue 2025-12-11 (EA) 
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 EA2025-71

Conference Information
Committee EA US  
Conference Date 2025-12-18 - 2025-12-19 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English) [Joint Meeting on Acoustics and Ultrasonics Subsociety] Engineering/Electro Acoustics, Ultrasonics, etc. 
Paper Information
Registration To EA 
Conference Code 2025-12-EA-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Effects of interaural level and time difference adjustment on sound field synthesis in beamforming-based binaural reproduction 
Sub Title (in English)  
Keyword(1) Beamforming  
Keyword(2) Sound field reproduction  
Keyword(3) Least-squares method  
Keyword(4) Interaural level difference(ILD)  
Keyword(5) Interaural time difference(ITD)  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Daichi Taura  
1st Author's Affiliation Akita Prefectual University (Akita Prefectual Univ.)
2nd Author's Name Kanji Watanabe  
2nd Author's Affiliation Akita Prefectual University (Akita Prefectual Univ.)
3rd Author's Name Masayuki Nishiguchi  
3rd Author's Affiliation Akita Prefectual University (Akita Prefectual Univ.)
4th Author's Name Koji Abe  
4th Author's Affiliation Akita Prefectual University (Akita Prefectual Univ.)
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Speaker Author-1 
Date Time 2025-12-19 14:20:00 
Presentation Time 25 minutes 
Registration for EA 
Paper # EA2025-71 
Volume (vol) vol.125 
Number (no) no.300 
Page pp.64-69 
#Pages 6 
Date of Issue 2025-12-11 (EA) 

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