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Paper Abstract and Keywords
Presentation 2013-02-01 09:50
Study of optimum spatial resolution at each frequency band based on variances of phase differences for real-time sound source localization
Kohei Hayashida, Masato Nakayama, Takanobu Nishiura, Yoichi Yamashita (Ritsumeikan Univ.) SIP2012-100 RCS2012-257
Abstract (in Japanese) (See Japanese page) 
(in English) Conventional near-field sound source localization methods with microphone-array calculate spatial spectrum in each scanning position of discretized space and each frequency.
Hence, elapsed time is increased and real-time processing is difficult.
Real-time processing is important for achieving the natural interaction with the speech interfaces.
To overcome this problem, we newly propose a sound source localization method based on Multi-resolution Scanning in Frequency Domain (MSFD).
MSFD utilizes lower spatial resolution in the lower frequency band and higher spatial resolution in the higher frequency band to reduce elapsed time.
The spatial resolution at each frequency is calculated on the basis of the variances of phase differences among microphones.
The results of evaluation experiment indicated that the proposed MSFD could reduce the elapsed time without degrading the localization accuracy.
Keyword (in Japanese) (See Japanese page) 
(in English) Microphone-array / Sound source localization / Real-time processing / Multi-resolution scanning / Spatial resolution / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 423, SIP2012-100, pp. 115-120, Jan. 2013.
Paper # SIP2012-100 
Date of Issue 2013-01-24 (SIP, RCS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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 SIP2012-100 RCS2012-257

Conference Information
Committee SIP RCS  
Conference Date 2013-01-31 - 2013-02-01 
Place (in Japanese) (See Japanese page) 
Place (in English) Viewport-Kure-Hotel (Kure) 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SIP 
Conference Code 2013-01-SIP-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study of optimum spatial resolution at each frequency band based on variances of phase differences for real-time sound source localization 
Sub Title (in English)  
Keyword(1) Microphone-array  
Keyword(2) Sound source localization  
Keyword(3) Real-time processing  
Keyword(4) Multi-resolution scanning  
Keyword(5) Spatial resolution  
Keyword(6)  
Keyword(7)  
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1st Author's Name Kohei Hayashida  
1st Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
2nd Author's Name Masato Nakayama  
2nd Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
3rd Author's Name Takanobu Nishiura  
3rd Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
4th Author's Name Yoichi Yamashita  
4th Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
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Speaker Author-1 
Date Time 2013-02-01 09:50:00 
Presentation Time 25 minutes 
Registration for SIP 
Paper # SIP2012-100, RCS2012-257 
Volume (vol) vol.112 
Number (no) no.423(SIP), no.424(RCS) 
Page pp.115-120 
#Pages 6 
Date of Issue 2013-01-24 (SIP, RCS) 

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