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Paper Abstract and Keywords
Presentation 2007-12-07 11:00
Study on cardioid super-wide-range microphone
Kazuho Ono, Takehiro Sugimoto, Akio Ando (NHK STRL), Tomohiro Nomura, Ryuzo Oshima, Keishi Imanaga (Sanken Mic.) EA2007-87
Abstract (in Japanese) (See Japanese page) 
(in English) Study has been being conducted for the super-wide-range microphone which covers the frequency range up to 100 kHz and has low intrinsic noise level. The authors has recently started the study for cardioid type super-wide-range microphone. The combination of already developed omni-directional capsule and newly designed bi-directional capsule covering the frequency range up to 20kHz was adopted as basic configuration. This paper describes the study on the arrangement of the two capsules, and also describes the development of a prototype microphone. The measurement result showed that the sensitivity of the developed microphone for backward sound wave was suppressed well for wide frequency range.
Keyword (in Japanese) (See Japanese page) 
(in English) Super-wide-range / Microphone / Cardioid / Uni-directional / Directivity composition / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 370, EA2007-87, pp. 7-12, Dec. 2007.
Paper # EA2007-87 
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) Study on cardioid super-wide-range microphone 
Sub Title (in English)  
Keyword(1) Super-wide-range  
Keyword(2) Microphone  
Keyword(3) Cardioid  
Keyword(4) Uni-directional  
Keyword(5) Directivity composition  
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1st Author's Name Kazuho Ono  
1st Author's Affiliation Japan Broadcasting Corporation Science and Technical Research Laboratories (NHK STRL)
2nd Author's Name Takehiro Sugimoto  
2nd Author's Affiliation Japan Broadcasting Corporation Science and Technical Research Laboratories (NHK STRL)
3rd Author's Name Akio Ando  
3rd Author's Affiliation Japan Broadcasting Corporation Science and Technical Research Laboratories (NHK STRL)
4th Author's Name Tomohiro Nomura  
4th Author's Affiliation Sanken Microphone Co., Ltd. (Sanken Mic.)
5th Author's Name Ryuzo Oshima  
5th Author's Affiliation Sanken Microphone Co., Ltd. (Sanken Mic.)
6th Author's Name Keishi Imanaga  
6th Author's Affiliation Sanken Microphone Co., Ltd. (Sanken Mic.)
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Speaker Author-1 
Date Time 2007-12-07 11:00:00 
Presentation Time 30 minutes 
Registration for EA 
Paper # EA2007-87 
Volume (vol) vol.107 
Number (no) no.370 
Page pp.7-12 
#Pages 6 
Date of Issue 2007-11-30 (EA) 

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