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Paper Abstract and Keywords
Presentation 2025-03-04 11:05
[Poster Presentation] Source-specific forgetting factor in multiplicative update online AuxIVA.
Kaito Masuko, Taishi Nakashima, Nobutaka Ono (Tokyo Metropolitan Univ.) EA2024-145 SIP2024-180 SP2024-86
Abstract (in Japanese) (See Japanese page) 
(in English) This study formulates a multiplicative update formulation of the demixing matrix update in online AuxIVA, which is an online process of Auxiliary-function-based Independent Vector Analysis (AuxIVA). We then investigate a method to control the source-specific forgetting factors. In online AuxIVA, the forgetting factor is a parameter that controls how much information is retained from past time frames. In the conventional method, it is given as a scalar value, which means that the statistics of all sound sources are adjusted with a uniform weight. This has the disadvantage of forgetting information that should be retained. On the other hand, the proposed method can adjust the statistics for each sound source by controlling the forgetting factor for each source. Simulation experiments were conducted, and it was confirmed that the proposed method improved the separation performance compared to the conventional method.
Keyword (in Japanese) (See Japanese page) 
(in English) multiplicative update / forgetting factor / online blind source separation / independent vector analysis / / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 389, EA2024-145, pp. 409-414, March 2025.
Paper # EA2024-145 
Date of Issue 2025-02-23 (EA, SIP, SP) 
ISSN 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 EA2024-145 SIP2024-180 SP2024-86

Conference Information
Committee EA SIP SP IPSJ-SLP  
Conference Date 2025-03-02 - 2025-03-04 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EA 
Conference Code 2025-03-EA-SIP-SP-SLP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Source-specific forgetting factor in multiplicative update online AuxIVA. 
Sub Title (in English)  
Keyword(1) multiplicative update  
Keyword(2) forgetting factor  
Keyword(3) online blind source separation  
Keyword(4) independent vector analysis  
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1st Author's Name Kaito Masuko  
1st Author's Affiliation Tokyo Metropolitan University (Tokyo Metropolitan Univ.)
2nd Author's Name Taishi Nakashima  
2nd Author's Affiliation Tokyo Metropolitan University (Tokyo Metropolitan Univ.)
3rd Author's Name Nobutaka Ono  
3rd Author's Affiliation Tokyo Metropolitan University (Tokyo Metropolitan Univ.)
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Speaker Author-1 
Date Time 2025-03-04 11:05:00 
Presentation Time 80 minutes 
Registration for EA 
Paper # EA2024-145, SIP2024-180, SP2024-86 
Volume (vol) vol.124 
Number (no) no.389(EA), no.390(SIP), no.391(SP) 
Page pp.409-414 
#Pages 6 
Date of Issue 2025-02-23 (EA, SIP, SP) 

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