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Paper Abstract and Keywords
Presentation 2020-03-02 13:00
[Poster Presentation] A study on loudspeaker measurement with reflection cancellation for each frequency in a reflective environment
Akiyuki Moritani, Yutaka Kaneda (Tokyo Denki Univ.) EA2019-114 SIP2019-116 SP2019-63
Abstract (in Japanese) (See Japanese page) 
(in English) When the impulse response is measured in an ordinary room, the reflected sounds are superimposed on the direct sound (loudspeaker impulse response). Therefore, the loudspeaker impulse response is measured in an anechoic chamber or anechoic box. However, since these facilities are very expensive, a method of measuring the loudspeaker impulse response in an ordinary room is strongly required. A possible method is to cancel the reflections using the direct sound wave form before they arrive. However, this method is not sufficiently effective. In this study, we examined the conditions required for reflection cancellation and proposed a method of reflection cancellation for each frequency using time-frequency analysis. Experiments in a real environment show the effectiveness of the proposed method.
Keyword (in Japanese) (See Japanese page) 
(in English) Impulse response / Loudspeaker / Loudspeaker frequency response / Reflection cancellation / / / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 439, EA2019-114, pp. 77-82, March 2020.
Paper # EA2019-114 
Date of Issue 2020-02-24 (EA, SIP, SP) 
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)
Download PDF EA2019-114 SIP2019-116 SP2019-63

Conference Information
Committee SP EA SIP  
Conference Date 2020-03-02 - 2020-03-03 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa Industry Support Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EA 
Conference Code 2020-03-SP-EA-SIP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study on loudspeaker measurement with reflection cancellation for each frequency in a reflective environment 
Sub Title (in English)  
Keyword(1) Impulse response  
Keyword(2) Loudspeaker  
Keyword(3) Loudspeaker frequency response  
Keyword(4) Reflection cancellation  
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1st Author's Name Akiyuki Moritani  
1st Author's Affiliation Tokyo Denki University (Tokyo Denki Univ.)
2nd Author's Name Yutaka Kaneda  
2nd Author's Affiliation Tokyo Denki University (Tokyo Denki Univ.)
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Speaker
Date Time 2020-03-02 13:00:00 
Presentation Time 90 
Registration for EA 
Paper # IEICE-EA2019-114,IEICE-SIP2019-116,IEICE-SP2019-63 
Volume (vol) IEICE-119 
Number (no) no.439(EA), no.440(SIP), no.441(SP) 
Page pp.77-82 
#Pages IEICE-6 
Date of Issue IEICE-EA-2020-02-24,IEICE-SIP-2020-02-24,IEICE-SP-2020-02-24 


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