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Paper Abstract and Keywords
Presentation 2007-11-16 10:30
A Study on an Estimation Method of Parameters for Closed-box Loudspeaker system
Rika Nakao, Yoshinobu Kajikawa, Yasuo Nomura (Kansai Univ.) EA2007-81
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we propose a way to estimate the linear and nonlinear parameters of a closed-box loudspeaker system at the same time by Simulated Annealing(SA) for Mirror filter. We have estimated the linear parameters using the impedance characteristic of a lodspeaker system and the nolinear ones using the displacement characteristic of a diaphragm by SA separately. However, we have not estimated them by the influence of the fixed linear parameters in some cases. In contrast, the proposed method is a way to estimate the linear and nonlinear parameters at the same time using the impedance characteristic and the displacement characteristic of a diaphragm by SA. We can estimate the parameters with accuracy to take account of both characteristics. We design Mirror filter which uses the parameters of a loudspeaker system determined by SA, and examine the effectiveness on compensating nonlinear distortions of a loudspeaker system. Experimental results demonstrate that the levels of nonlinear distortions can be reduced in the range of 5 dB to 15 dB compared with before compensation in case of using the parameters determined by SA.
Keyword (in Japanese) (See Japanese page) 
(in English) Mirror filter / nonlinear distortion / Simulated Annealing / compensating distortion / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 317, EA2007-81, pp. 7-12, Nov. 2007.
Paper # EA2007-81 
Date of Issue 2007-11-09 (EA) 
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)
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Conference Information
Committee EA  
Conference Date 2007-11-15 - 2007-11-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Kumamoto University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To EA 
Conference Code 2007-11-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on an Estimation Method of Parameters for Closed-box Loudspeaker system 
Sub Title (in English)  
Keyword(1) Mirror filter  
Keyword(2) nonlinear distortion  
Keyword(3) Simulated Annealing  
Keyword(4) compensating distortion  
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1st Author's Name Rika Nakao  
1st Author's Affiliation Kansai University (Kansai Univ.)
2nd Author's Name Yoshinobu Kajikawa  
2nd Author's Affiliation Kansai University (Kansai Univ.)
3rd Author's Name Yasuo Nomura  
3rd Author's Affiliation Kansai University (Kansai Univ.)
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Speaker Author-1 
Date Time 2007-11-16 10:30:00 
Presentation Time 30 minutes 
Registration for EA 
Paper # EA2007-81 
Volume (vol) vol.107 
Number (no) no.317 
Page pp.7-12 
#Pages
Date of Issue 2007-11-09 (EA) 


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