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Paper Abstract and Keywords
Presentation 2007-04-27 15:15
A study on improved DOA estimation from binaural sound
Takayuki Wakatake, Yoshifumi Nagata (Iwate Univ.), Satoshi Iwasaki (Aichi Medical Univ.), Takahiko Hariyama (Hamamatsu Univ. S. M.), Toyota Fujioka, Masato Abe (Iwate Univ.) EA2007-4
Abstract (in Japanese) (See Japanese page) 
(in English) In order to improve estimation accuracy of directions of arrival(DOA) of sound sources, we propose a new weighting function for averaging multiple
spctral components. We exploit a ratio between the eigen-values obtained from the auto correlation matrix at each frequency bin for an weighting function. This method improves the estimatuon accuracy in the cases where a single sound source exists. Furthermore, we propose a iterative method based on the weighted Wiener gain to coop with multiple source environment. At first, this method regards the maxmum peak in the spatial spectrum as a one source. Next, a filter to reduce the spectral components that contribute the maximum peak is applied and re-estimate the second source to detect the maximum peak in the residual spatial spectrum. While the methods using the eigen-ratio weighting function and the weighted Wiener gain were almost equivalent in a single source environment, the iterative method for the weighted Wiener gain only attained good performance for the cases where multiple sound sources exist.
Keyword (in Japanese) (See Japanese page) 
(in English) HRTF / Wiener Gain / two-dimensional DOA estimation / eigenvalue / iterative estimation / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 26, EA2007-4, pp. 17-22, April 2007.
Paper # EA2007-4 
Date of Issue 2007-04-20 (EA) 
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)
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Conference Information
Committee EA  
Conference Date 2007-04-27 - 2007-04-27 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg (Tokyo, Japan) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Active Noise Control, Echo Cancel, Noise Cancel / General 
Paper Information
Registration To EA 
Conference Code 2007-04-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study on improved DOA estimation from binaural sound 
Sub Title (in English)  
Keyword(1) HRTF  
Keyword(2) Wiener Gain  
Keyword(3) two-dimensional DOA estimation  
Keyword(4) eigenvalue  
Keyword(5) iterative estimation  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Takayuki Wakatake  
1st Author's Affiliation Iwate University (Iwate Univ.)
2nd Author's Name Yoshifumi Nagata  
2nd Author's Affiliation Iwate University (Iwate Univ.)
3rd Author's Name Satoshi Iwasaki  
3rd Author's Affiliation Aichi Medical University (Aichi Medical Univ.)
4th Author's Name Takahiko Hariyama  
4th Author's Affiliation Hamamatsu University School of Medicine (Hamamatsu Univ. S. M.)
5th Author's Name Toyota Fujioka  
5th Author's Affiliation Iwate University (Iwate Univ.)
6th Author's Name Masato Abe  
6th Author's Affiliation Iwate University (Iwate Univ.)
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Speaker Author-1 
Date Time 2007-04-27 15:15:00 
Presentation Time 30 minutes 
Registration for EA 
Paper # EA2007-4 
Volume (vol) vol.107 
Number (no) no.26 
Page pp.17-22 
#Pages 6 
Date of Issue 2007-04-20 (EA) 

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