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Paper Abstract and Keywords
Presentation 2010-08-09 13:00
Implementation of a shperical 121-microphone array for recording sound field based on higher order Ambisonics
Takuma Okamoto, Yukio Iwaya, Shuichi Sakamoto, Yo-iti Suzuki (Tohoku Univ.) EA2010-43
Abstract (in Japanese) (See Japanese page) 
(in English) For realizing communications systems with very high sense-of-presence, technologies to record and re- produce three dimensional sound field are important. Higher-order Ambisonics (HOA) is a promising technique to render three dimensional sound spaces precisely. HOA is also applicable to record three dimensional sound spaces accurately. Thus, we have developled a microphone array using a spherically distributed 121 small digital ECMs for applying HOA. With his array, HOA recording up to 9th order, the highest order realized in the world at present, can be realized. In this report, the system configuration and the recording specifications are discussed.
Keyword (in Japanese) (See Japanese page) 
(in English) Sound field recording / Higher-order Ambisonica (HOA) / Spherical microphone array / Digital ECM / Spherical harmonics expansion / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 171, EA2010-43, pp. 1-6, Aug. 2010.
Paper # EA2010-43 
Date of Issue 2010-08-02 (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)
Download PDF EA2010-43

Conference Information
Committee EA  
Conference Date 2010-08-09 - 2010-08-10 
Place (in Japanese) (See Japanese page) 
Place (in English) Tohoku Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Acoustic Signal Processing, Psychological and Physiological Acoustics, and Related Topics 
Paper Information
Registration To EA 
Conference Code 2010-08-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Implementation of a shperical 121-microphone array for recording sound field based on higher order Ambisonics 
Sub Title (in English)  
Keyword(1) Sound field recording  
Keyword(2) Higher-order Ambisonica (HOA)  
Keyword(3) Spherical microphone array  
Keyword(4) Digital ECM  
Keyword(5) Spherical harmonics expansion  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Takuma Okamoto  
1st Author's Affiliation Research Institute of Electrical Communication/Graduate School of Engineering, Tohoku University (Tohoku Univ.)
2nd Author's Name Yukio Iwaya  
2nd Author's Affiliation Research Institute of Electrical Communication/Graduate School of Information Sciences, Tohoku University (Tohoku Univ.)
3rd Author's Name Shuichi Sakamoto  
3rd Author's Affiliation Research Institute of Electrical Communication/Graduate School of Information Sciences, Tohoku University (Tohoku Univ.)
4th Author's Name Yo-iti Suzuki  
4th Author's Affiliation Research Institute of Electrical Communication/Graduate School of Information Sciences, Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2010-08-09 13:00:00 
Presentation Time 30 minutes 
Registration for EA 
Paper # EA2010-43 
Volume (vol) vol.110 
Number (no) no.171 
Page pp.1-6 
#Pages 6 
Date of Issue 2010-08-02 (EA) 

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