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Paper Abstract and Keywords
Presentation 2018-03-20 12:55
Study on Noise Suppression Method based on Modulation Spectrum
Takuto Isoyama, Masashi Unoki (JAIST) EA2017-168 SIP2017-177 SP2017-151
Abstract (in Japanese) (See Japanese page) 
(in English) It is known that classical and typical methods for noise suppression can successfully suppress stationary noises. However, non-stationary noises such as intermittent and impulsive noises have not been sufficiently suppressed since these methods have not focused on temporal characteristics. This paper aims to investigate a method for suppressing the stationary, intermittent and impulsive noises besed on their modulation spectrum (MS) as temporal characteristics. MS features in the stationary, intermittent and impulsive noises were investigated and these features were removed from the observed signal to suppress these noises. The direct-current component of MS in the stationary noise, harmonicity of MS in the intermittent noise, and higher modulation-frequency components in the impulsive noise were removed. As results, the following advantages were confirmed: (1) sound pressure level of the noise was decreased, (2) signal-to-noise ratio of the noisy speech was improved, and (3) loudness and roughness of the noises was decreased. These results indicated that the non-stationary noises are successfully suppressed using their MS characteristics.
Keyword (in Japanese) (See Japanese page) 
(in English) Noise suppression / modulation spectral analysis / intermittent noise / impulsive noise / / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 515, EA2017-168, pp. 361-366, March 2018.
Paper # EA2017-168 
Date of Issue 2018-03-12 (EA, SIP, SP) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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 EA2017-168 SIP2017-177 SP2017-151

Conference Information
Committee SIP EA SP MI  
Conference Date 2018-03-19 - 2018-03-20 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English) Speech, Engineering/Electro Acoustics, Signal Processing, and Related Topics [SIP, EA, SP]/ Medical Image Engineering, Analysis, Recognition, etc. [MI] 
Paper Information
Registration To EA 
Conference Code 2018-03-SIP-EA-SP-MI 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study on Noise Suppression Method based on Modulation Spectrum 
Sub Title (in English)  
Keyword(1) Noise suppression  
Keyword(2) modulation spectral analysis  
Keyword(3) intermittent noise  
Keyword(4) impulsive noise  
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1st Author's Name Takuto Isoyama  
1st Author's Affiliation Japan Advanced Institute of Science and Technology (JAIST)
2nd Author's Name Masashi Unoki  
2nd Author's Affiliation Japan Advanced Institute of Science and Technology (JAIST)
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Speaker Author-1 
Date Time 2018-03-20 12:55:00 
Presentation Time 25 minutes 
Registration for EA 
Paper # EA2017-168, SIP2017-177, SP2017-151 
Volume (vol) vol.117 
Number (no) no.515(EA), no.516(SIP), no.517(SP) 
Page pp.361-366 
#Pages
Date of Issue 2018-03-12 (EA, SIP, SP) 


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