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Paper Abstract and Keywords
Presentation 2021-11-15 13:30
[Poster Presentation] Noise suppression by instantaneous spectral subtraction based on simultaneous estimation of amplitude and phase of noise spectrum
Koki Takenaka, Kenji Ozawa (Grad School, Univ. of Yamanashi) EA2021-42 EMM2021-69
Abstract (in Japanese) (See Japanese page) 
(in English) Noise suppression using a microphone array and neural networks (NN) has been investigated .In this study, the output from a microphone array is converted into a spatio-temporal sound pressure distribution image, and its two-dimensional (2D) amplitude and phase spectrum obtained by the 2D fast Fourier transform is used for noise suppression. In addition, a system that can handle multiple noise sources is proposed and its performance is evaluated. In order to reflect the dependence of the phase characteristics on the amplitude characteristics, a DNN that simultaneously estimates the amplitude and phase of the noise spectrum was used to improve the suppression performance. Results of computer simulations showed noise suppression of about $-23 sim -20$~dB for two noise sources.
Keyword (in Japanese) (See Japanese page) 
(in English) Microphone array / Two-dimensional spectrum / Neural network / Direction of arrival / Multiple noise suppression / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 246, EA2021-42, pp. 85-90, Nov. 2021.
Paper # EA2021-42 
Date of Issue 2021-11-08 (EA, EMM) 
ISSN 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 EA2021-42 EMM2021-69

Conference Information
Committee EMM EA ASJ-H  
Conference Date 2021-11-15 - 2021-11-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) [Beginners Session] Engineering/Electro Acoustics, Content Processing, Digital Watermarking, Psychological and Physiological Acoustics, and Related Topics 
Paper Information
Registration To EA 
Conference Code 2021-11-EMM-EA-H 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Noise suppression by instantaneous spectral subtraction based on simultaneous estimation of amplitude and phase of noise spectrum 
Sub Title (in English)  
Keyword(1) Microphone array  
Keyword(2) Two-dimensional spectrum  
Keyword(3) Neural network  
Keyword(4) Direction of arrival  
Keyword(5) Multiple noise suppression  
1st Author's Name Koki Takenaka  
1st Author's Affiliation Graduate School, University of Yamanashi (Grad School, Univ. of Yamanashi)
2nd Author's Name Kenji Ozawa  
2nd Author's Affiliation Graduate School, University of Yamanashi (Grad School, Univ. of Yamanashi)
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Speaker Author-1 
Date Time 2021-11-15 13:30:00 
Presentation Time 120 minutes 
Registration for EA 
Paper # EA2021-42, EMM2021-69 
Volume (vol) vol.121 
Number (no) no.246(EA), no.247(EMM) 
Page pp.85-90 
Date of Issue 2021-11-08 (EA, EMM) 

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