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Paper Abstract and Keywords
Presentation 2007-12-07 11:30
Accurate sound source localization using multiple small microphone arrays and ultrasonic distance measurement
Kazunori Kobayashi, Ken'ichi Furuya, Yoichi Haneda, Akitoshi Kataoka (NTT) EA2007-88
Abstract (in Japanese) (See Japanese page) 
(in English) Automatic camera steering systems by using microphone array are used in video conferencing systems. However, detecting the distance to the talker is difficult in conventional methods of estimating talker locations when the microphone array is small. For this reason, the conventional systems
could not control the zoom of camera accurately. In this report, we proposed a method of estimating microphone and talker locations by using the small microphne array settled on the camera unit and the mobile microphne array. The proposed method measures the distance between loudspeakers settled on the camera unit and microphones by using ultrasonic. The proposed method accurately estimates the locations by using the measured distances and time diffences of arraival between microphones. The experimental results with real-time estimation system demonstrated that the accuracy of estimating locations in the proposed method is much higher than that in the conventional method.
Keyword (in Japanese) (See Japanese page) 
(in English) Microphone array / Localization / Camera control / Video conference / Ultrasonic / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 370, EA2007-88, pp. 13-18, Dec. 2007.
Paper # EA2007-88 
Date of Issue 2007-11-30 (EA) 
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)
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Conference Information
Committee EA  
Conference Date 2007-12-07 - 2007-12-07 
Place (in Japanese) (See Japanese page) 
Place (in English) NHK Science & Technical Research Laboratories 
Topics (in Japanese) (See Japanese page) 
Topics (in English) 3D-Audio, Transducers/General 
Paper Information
Registration To EA 
Conference Code 2007-12-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Accurate sound source localization using multiple small microphone arrays and ultrasonic distance measurement 
Sub Title (in English)  
Keyword(1) Microphone array  
Keyword(2) Localization  
Keyword(3) Camera control  
Keyword(4) Video conference  
Keyword(5) Ultrasonic  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Kazunori Kobayashi  
1st Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
2nd Author's Name Ken'ichi Furuya  
2nd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
3rd Author's Name Yoichi Haneda  
3rd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
4th Author's Name Akitoshi Kataoka  
4th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
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Speaker Author-1 
Date Time 2007-12-07 11:30:00 
Presentation Time 30 minutes 
Registration for EA 
Paper # EA2007-88 
Volume (vol) vol.107 
Number (no) no.370 
Page pp.13-18 
#Pages 6 
Date of Issue 2007-11-30 (EA) 

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