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Paper Abstract and Keywords
Presentation 2025-03-03 09:45
[Poster Presentation] Study on Virtual Sensing ANC Using Tetrahedral Microphone Arrays
Toma Yoshimatsu (UEC), Hiroaki Itou, Shihori Kozuka, Noriyoshi Kamado (NTT), Yoichi Haneda (UEC) EA2024-102 SIP2024-137 SP2024-43
Abstract (in Japanese) (See Japanese page) 
(in English) This research focuses on the development of ANC (Active Noise Control) headrests designed to create a comfortable acoustic environment for individuals using public transportation. In ANC headrests, the placement of microphones directly at ear positions is impractical, necessitating the implementation of virtual sensing techniques. However, conventional virtual sensing methods often encounter limitations in achieving reliable robustness.In this study, we propose a novel virtual sensing ANC system that does not require prior estimation. Specifically, we introduce a virtual sensing method leveraging a tetrahedral microphone array. Using spherical harmonic expansion, the tetrahedral microphone array interpolates sound pressure on a circumscribed spherical surface based on signals captured by individual microphones. This technique enables accurate prediction of signals at ear positions located on the same spherical surface.To further improve performance, correction filter was incorporated to mitigate prediction errors by employing multiple tetrahedral microphone arrays. The proposed system's noise reduction capabilities and robustness against disturbances were evaluated through comprehensive simulations and experimental validation.
Keyword (in Japanese) (See Japanese page) 
(in English) Active Noise Control / Virtual sensing / Spherical hermonics / / / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 389, EA2024-102, pp. 152-157, March 2025.
Paper # EA2024-102 
Date of Issue 2025-02-23 (EA, SIP, SP) 
ISSN Online edition: ISSN 2432-6380
Copyright
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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 EA2024-102 SIP2024-137 SP2024-43

Conference Information
Committee EA SIP SP IPSJ-SLP  
Conference Date 2025-03-02 - 2025-03-04 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EA 
Conference Code 2025-03-EA-SIP-SP-SLP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study on Virtual Sensing ANC Using Tetrahedral Microphone Arrays 
Sub Title (in English)  
Keyword(1) Active Noise Control  
Keyword(2) Virtual sensing  
Keyword(3) Spherical hermonics  
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1st Author's Name Toma Yoshimatsu  
1st Author's Affiliation The University of Electro-Communications (UEC)
2nd Author's Name Hiroaki Itou  
2nd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
3rd Author's Name Shihori Kozuka  
3rd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
4th Author's Name Noriyoshi Kamado  
4th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
5th Author's Name Yoichi Haneda  
5th Author's Affiliation The University of Electro-Communications (UEC)
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Speaker Author-1 
Date Time 2025-03-03 09:45:00 
Presentation Time 80 minutes 
Registration for EA 
Paper # EA2024-102, SIP2024-137, SP2024-43 
Volume (vol) vol.124 
Number (no) no.389(EA), no.390(SIP), no.391(SP) 
Page pp.152-157 
#Pages 6 
Date of Issue 2025-02-23 (EA, SIP, SP) 

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