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Paper Abstract and Keywords
Presentation 2015-11-12 16:30
Low delay binaural wind noise cancellation for hearing aids
Yoh-ichi Fujisaka (RION), Ryousuke Kouyama, Hidetoshi Nakashima (NIT, Kumamoto College), Nobuhiko Hiruma (RION) EA2015-30 EMM2015-51
Abstract (in Japanese) (See Japanese page) 
(in English) Wind noise is often an issue of hearing aid in outdoor. Generally a windproof is utilized to reduce the noise by attaching to the microphone. However, for hearing aids, the wind noise is reduced by signal processing since it is hard to attach the windproof to the microphone. We have proposed wind noise reduction algorithm for binaural hearing aids system that preserves binaural hearing information. This algorithm requires 32ms frame length in order to high frequency resolution for wind noise detection. On the other hand, tolerable delay time for hearing aids is 6ms approximately. Therefore, some improvement in the algorithm is required for low delay time and effective wind noise reduction.
In this paper, we proposed low delay binaural wind noise cancellation algorithm using frequency warped filter. Delay time caused by this algorithm is shorter than the tolerable one, while frequency resolution in low frequency range is the same as one of our previous method. As results of subjective experiments, proposed method gives almost the same score as the conventional high-pass filter method for directionality of the output signal. Meanwhile, externality by the proposed method is superior to by the conventional one.
Keyword (in Japanese) (See Japanese page) 
(in English) Hearing aids / Wind noise cancellation / HRTF / Low delay / Frequency warping / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 302, EA2015-30, pp. 35-40, Nov. 2015.
Paper # EA2015-30 
Date of Issue 2015-11-05 (EA, EMM) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 EA2015-30 EMM2015-51

Conference Information
Committee EA EMM  
Conference Date 2015-11-12 - 2015-11-13 
Place (in Japanese) (See Japanese page) 
Place (in English) Kumamoto Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Multimedia Fusion, Content Processing, Multimedia Retrieval, Digital Watermarking, and Related Topics 
Paper Information
Registration To EA 
Conference Code 2015-11-EA-EMM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Low delay binaural wind noise cancellation for hearing aids 
Sub Title (in English)  
Keyword(1) Hearing aids  
Keyword(2) Wind noise cancellation  
Keyword(3) HRTF  
Keyword(4) Low delay  
Keyword(5) Frequency warping  
1st Author's Name Yoh-ichi Fujisaka  
1st Author's Affiliation RION Co., Ltd. (RION)
2nd Author's Name Ryousuke Kouyama  
2nd Author's Affiliation National Institute of Technology, Kumamoto College (NIT, Kumamoto College)
3rd Author's Name Hidetoshi Nakashima  
3rd Author's Affiliation National Institute of Technology, Kumamoto College (NIT, Kumamoto College)
4th Author's Name Nobuhiko Hiruma  
4th Author's Affiliation RION Co., Ltd. (RION)
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Date Time 2015-11-12 16:30:00 
Presentation Time 30 
Registration for EA 
Paper # IEICE-EA2015-30,IEICE-EMM2015-51 
Volume (vol) IEICE-115 
Number (no) no.302(EA), no.303(EMM) 
Page pp.35-40 
#Pages IEICE-6 
Date of Issue IEICE-EA-2015-11-05,IEICE-EMM-2015-11-05 

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