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Paper Abstract and Keywords
Presentation 2011-03-05 16:15
Speech Enhancement Based on Frequency-Fluctuation-Length Filter
Hideyuki Tachibana, Nobutaka Ono, Shigeki Sagayama (Univ. of Tokyo) SP2010-130
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we describe a novel speech enhancement technique based on fluctuation lengths of speech signals. Fluctuation length is a new parameter of a signal which we have proposed recently, that corresponds to
the boundary of two classes of frame lengths: frame lengths which interpret the signal as stationary-narrowband signal, and frame lengths which interpret the signal as nonstationary-wideband signal. Because a speech signal is regarded as a stationary signal in terms of short frame length, while as a nonstationary signal in terms of long frame length, speech signal is characteristic compared to some noises in terms of distribution of frequency and fluctuation length. Therefore, it is expected that a method based on frequency and fluctuation length is effective for speech enhancement. In this paper, we consider the frequency-fluctuation-length representation of speech signal, and by
using a property that the representations of speech signals are quite similar each other regardless of the difference of speakers, we designed a unique filter that pass speech signals, and applied it to speech enhancement problem. We conducted an experimental evaluation on the technique, and verified that the method can enhance 0.0 dB speech
signal to around 3 – 8 dB. The experimental result supports the effectiveness of the method.
Keyword (in Japanese) (See Japanese page) 
(in English) Fluctuation-Length / Fluctuation-Length Spectrum / Frequency-Fluctuation-Length Representation / Speech Enhancement / Multi-stage HPSS / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 452, SP2010-130, pp. 89-94, March 2011.
Paper # SP2010-130 
Date of Issue 2011-02-25 (SP) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
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 SP2010-130

Conference Information
Committee SP  
Conference Date 2011-03-04 - 2011-03-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Faculty of Engineering, The University of Tokyo 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SP 
Conference Code 2011-03-SP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Speech Enhancement Based on Frequency-Fluctuation-Length Filter 
Sub Title (in English)  
Keyword(1) Fluctuation-Length  
Keyword(2) Fluctuation-Length Spectrum  
Keyword(3) Frequency-Fluctuation-Length Representation  
Keyword(4) Speech Enhancement  
Keyword(5) Multi-stage HPSS  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Hideyuki Tachibana  
1st Author's Affiliation The University of Tokyo (Univ. of Tokyo)
2nd Author's Name Nobutaka Ono  
2nd Author's Affiliation The University of Tokyo (Univ. of Tokyo)
3rd Author's Name Shigeki Sagayama  
3rd Author's Affiliation The University of Tokyo (Univ. of Tokyo)
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Speaker Author-1 
Date Time 2011-03-05 16:15:00 
Presentation Time 30 minutes 
Registration for SP 
Paper # SP2010-130 
Volume (vol) vol.110 
Number (no) no.452 
Page pp.89-94 
#Pages 6 
Date of Issue 2011-02-25 (SP) 

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