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Paper Abstract and Keywords
Presentation 2012-03-16 11:00
Examination and consideration concerning a relation between ear canal structure of IEC60268-7-based pinna model and reproducibility of sound pressure measurement
Kiyofumi Inanaga, Tohru Ifukube (Univ. of Tokyo), Tominori Kimura, Terumasa Yamamura (Technica Fukui) EA2011-121
Abstract (in Japanese) (See Japanese page) 
(in English) A measurement platform that may realize a state of real use and good reproducibility is requested for measuring characteristics of headphones and earphones. Combination of a pinna model (simulator) based on IEC60268-7 with HATS based on IEC60318-7 (60959) has been recommended as one of measurement platforms. However, there is a problem that the reproducibility of measurement results changes according to a kind of the earphone. The reason would be because the ear canal structure of the pinna model is not sufficiently provided. Especially, the ear canal structure exerts a big influence on the reproducibility of the measurement result for Canal (insertion) type earphone. Therefore, a new pinna model that may exactly simulate the ear canal structure of a real ear was proposed in this report. From the measurement results, it was ascertained that the reproducibility can be certainly improved by using the new pinna model.
Keyword (in Japanese) (See Japanese page) 
(in English) IEC / HATS / SAMAR / Headphones / Measuring / Noise cance / Canal-type / EN50332  
Reference Info. IEICE Tech. Rep., vol. 111, no. 490, EA2011-121, pp. 7-12, March 2012.
Paper # EA2011-121 
Date of Issue 2012-03-09 (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 EA2011-121

Conference Information
Committee EA  
Conference Date 2012-03-16 - 2012-03-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Central Research Laboratory, Hitachi, Ltd. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General Topics 
Paper Information
Registration To EA 
Conference Code 2012-03-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Examination and consideration concerning a relation between ear canal structure of IEC60268-7-based pinna model and reproducibility of sound pressure measurement 
Sub Title (in English)  
Keyword(1) IEC  
Keyword(2) HATS  
Keyword(3) SAMAR  
Keyword(4) Headphones  
Keyword(5) Measuring  
Keyword(6) Noise cance  
Keyword(7) Canal-type  
Keyword(8) EN50332  
1st Author's Name Kiyofumi Inanaga  
1st Author's Affiliation The University of Tokyo (Univ. of Tokyo)
2nd Author's Name Tohru Ifukube  
2nd Author's Affiliation The University of Tokyo (Univ. of Tokyo)
3rd Author's Name Tominori Kimura  
3rd Author's Affiliation Technica Fukui Co.,Ltd. (Technica Fukui)
4th Author's Name Terumasa Yamamura  
4th Author's Affiliation Technica Fukui Co.,Ltd. (Technica Fukui)
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Speaker Author-1 
Date Time 2012-03-16 11:00:00 
Presentation Time 30 minutes 
Registration for EA 
Paper # EA2011-121 
Volume (vol) vol.111 
Number (no) no.490 
Page pp.7-12 
#Pages 6 
Date of Issue 2012-03-09 (EA) 

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