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Paper Abstract and Keywords
Presentation 2012-03-08 12:20
Parameter Optimization in VAD Used in Noise Specral Estimation for Spectral Suppression Method
Guo Lei, Kenji Nakayama, Akihiro Hirano (Kanazawa Univ.) CAS2011-125 SIP2011-145 CS2011-117
Abstract (in Japanese) (See Japanese page) 
(in English) In spectral suppression noise canceller, spectral gain is multiplied to the noisy speech spectrum to reduce noise. To calculate spectral gain, noise spectrum estimation is necessary. By using Voice Activiy Detector (VAD), noise spectrum is estimated by discriminating the input noisy speech into speech/quasi-speech/non-speech frames. The threshold of noisy speech discrimination is not adaptive to input noise type in the conventional method.
In this paper, threshold optimization method is proposed. Based on noise characteristics, optimal parameters for colorless noise and colored noise are proposed. Also, automatic detection of colorless noise and colored noise algorithm is proposed. Simulations are carried out in 5 different noise-changed conditions by using 3 sets of input speech signals.
Keyword (in Japanese) (See Japanese page) 
(in English) VAD / Noise Canceller / Noise Discrimination / Colorless Noise / Colored Noise / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 465, CAS2011-125, pp. 103-108, March 2012.
Paper # CAS2011-125 
Date of Issue 2012-03-01 (CAS, SIP, CS) 
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 CAS2011-125 SIP2011-145 CS2011-117

Conference Information
Committee CAS CS SIP  
Conference Date 2012-03-08 - 2012-03-09 
Place (in Japanese) (See Japanese page) 
Place (in English) The University of Niigata 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Network Processor, Signal Processing for communication, and Wireless LAN/PAN, etc. 
Paper Information
Registration To CAS 
Conference Code 2012-03-CAS-CS-SIP 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Parameter Optimization in VAD Used in Noise Specral Estimation for Spectral Suppression Method 
Sub Title (in English)  
Keyword(1) VAD  
Keyword(2) Noise Canceller  
Keyword(3) Noise Discrimination  
Keyword(4) Colorless Noise  
Keyword(5) Colored Noise  
1st Author's Name Guo Lei  
1st Author's Affiliation Kanazawa University (Kanazawa Univ.)
2nd Author's Name Kenji Nakayama  
2nd Author's Affiliation Kanazawa University (Kanazawa Univ.)
3rd Author's Name Akihiro Hirano  
3rd Author's Affiliation Kanazawa University (Kanazawa Univ.)
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Date Time 2012-03-08 12:20:00 
Presentation Time 25 
Registration for CAS 
Paper # IEICE-CAS2011-125,IEICE-SIP2011-145,IEICE-CS2011-117 
Volume (vol) IEICE-111 
Number (no) no.465(CAS), no.466(SIP), no.467(CS) 
Page pp.103-108 
#Pages IEICE-6 
Date of Issue IEICE-CAS-2012-03-01,IEICE-SIP-2012-03-01,IEICE-CS-2012-03-01 

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