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Paper Abstract and Keywords
Presentation 2007-09-28 15:35
[Special Talk] Source Separation by Time-Variant Filter Based on Stochastic Models
Nobutaka Ono, Yosuke Izumi, Nobutaka Ito, Shigeki Sagayama (Univ. Tokyo) EA2007-59
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper,
we introduce our recent approach to two topics:
1) underdetermined ICA in noisy environment,
2) target source separation from surrounding diffuse noise.
While the popular framework of array signal processing
like adaptive beamformers or ICA
gives us a linear time-invariant filter as a separation system,
our proposed method is a time-variant filter
including time-frequency masking.
The difference between them is caused by observation models of interest.
In this paper,
we discuss the statistic observation models and proposed algorithm,
and show several experimental results.
Keyword (in Japanese) (See Japanese page) 
(in English) time-frequency masking / time-varient filter / maximum likelihood estimation / EM algorithm / isotropic noise / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 240, EA2007-59, pp. 25-30, Sept. 2007.
Paper # EA2007-59 
Date of Issue 2007-09-21 (EA) 
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 EA2007-59

Conference Information
Committee EA  
Conference Date 2007-09-28 - 2007-09-28 
Place (in Japanese) (See Japanese page) 
Place (in English) Nara Institute of Science and Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To EA 
Conference Code 2007-09-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Source Separation by Time-Variant Filter Based on Stochastic Models 
Sub Title (in English)  
Keyword(1) time-frequency masking  
Keyword(2) time-varient filter  
Keyword(3) maximum likelihood estimation  
Keyword(4) EM algorithm  
Keyword(5) isotropic noise  
1st Author's Name Nobutaka Ono  
1st Author's Affiliation The University of Tokyo (Univ. Tokyo)
2nd Author's Name Yosuke Izumi  
2nd Author's Affiliation The University of Tokyo (Univ. Tokyo)
3rd Author's Name Nobutaka Ito  
3rd Author's Affiliation The University of Tokyo (Univ. Tokyo)
4th Author's Name Shigeki Sagayama  
4th Author's Affiliation The University of Tokyo (Univ. Tokyo)
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Date Time 2007-09-28 15:35:00 
Presentation Time 45 
Registration for EA 
Paper # IEICE-EA2007-59 
Volume (vol) IEICE-107 
Number (no) no.240 
Page pp.25-30 
#Pages IEICE-6 
Date of Issue IEICE-EA-2007-09-21 

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