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Paper Abstract and Keywords
Presentation 2012-06-08 11:25
Measurements for dynamic distortion of loud-speakers using swept-sine signal
Toru Sasaki, Kantaro Takada, Heitaro Nakajima (Bifrostec) EA2012-37
Abstract (in Japanese) (See Japanese page) 
(in English) To evaluate the distortion of a loudspeaker, we considered the method to observe its dynamic-distortion by using a Swept-Sine signal. By using a low-pass or high-pass Swept-Sine signal in place of the test signal eliminated the narrow-band component that is used in the conventional dynamic-distortion measurement, we observed the distortion that occurs not only within the narrow-band but also in the eliminated band. As a result, we identified the band that mainly caused the distortion, and confirmed that the newly proposed Swept-Sine has greater sensitivity for detection of the dynamic-distortion. We have described the difference between the distortions detected on a speaker-unit 8cm in diameter mounted on a box-shaped enclosure or an egg-shaped enclosure as an example.
Keyword (in Japanese) (See Japanese page) 
(in English) Loudspeaker / Dynamic distortion / Swept-Sine / Band-eliminated signal / Speaker enclosure / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 76, EA2012-37, pp. 25-30, June 2012.
Paper # EA2012-37 
Date of Issue 2012-06-01 (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 EA2012-37

Conference Information
Committee EA  
Conference Date 2012-06-08 - 2012-06-08 
Place (in Japanese) (See Japanese page) 
Place (in English) Yamaha Co. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General topics 
Paper Information
Registration To EA 
Conference Code 2012-06-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Measurements for dynamic distortion of loud-speakers using swept-sine signal 
Sub Title (in English)  
Keyword(1) Loudspeaker  
Keyword(2) Dynamic distortion  
Keyword(3) Swept-Sine  
Keyword(4) Band-eliminated signal  
Keyword(5) Speaker enclosure  
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Keyword(7)  
Keyword(8)  
1st Author's Name Toru Sasaki  
1st Author's Affiliation Bifrostec Inc. (Bifrostec)
2nd Author's Name Kantaro Takada  
2nd Author's Affiliation Bifrostec Inc. (Bifrostec)
3rd Author's Name Heitaro Nakajima  
3rd Author's Affiliation Bifrostec Inc. (Bifrostec)
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Speaker Author-1 
Date Time 2012-06-08 11:25:00 
Presentation Time 25 minutes 
Registration for EA 
Paper # EA2012-37 
Volume (vol) vol.112 
Number (no) no.76 
Page pp.25-30 
#Pages 6 
Date of Issue 2012-06-01 (EA) 

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