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Paper Abstract and Keywords
Presentation 2008-08-04 10:45
Shortening of the measurement time for the harmonic distortion level measurement technique of the loudspeaker by the adaptive filter
Toyota Fujioka, Yoshifumi Nagata, Masato Abe (Iwate Univ.) EA2008-46
Abstract (in Japanese) (See Japanese page) 
(in English) The harmonic distortion level measurement technique of the loudspeaker by using the adaptive filter can be easily implemented even in a low performance DSP, because the computational complexity of this technique is much smaller than the conventional measurement technique by spectrum analysis. However, the convergence time of the adaptive filter disturbs the shortening of the measurement time. This paper describes that the harmonic distortion level measurement technique by using the adaptive filter can measure the accurate harmonic distortion level even if the convergence of the filter output signal is not complete yet, by estimating the fundamental frequency component and the harmonic frequency component at the same time.
Keyword (in Japanese) (See Japanese page) 
(in English) loudspeaker / harmonic distortion level / distortion level measurement / adaptive filter / / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 179, EA2008-46, pp. 7-12, Aug. 2008.
Paper # EA2008-46 
Date of Issue 2008-07-28 (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 2008-08-04 - 2008-08-05 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EA 
Conference Code 2008-08-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Shortening of the measurement time for the harmonic distortion level measurement technique of the loudspeaker by the adaptive filter 
Sub Title (in English)  
Keyword(1) loudspeaker  
Keyword(2) harmonic distortion level  
Keyword(3) distortion level measurement  
Keyword(4) adaptive filter  
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1st Author's Name Toyota Fujioka  
1st Author's Affiliation Iwate University (Iwate Univ.)
2nd Author's Name Yoshifumi Nagata  
2nd Author's Affiliation Iwate University (Iwate Univ.)
3rd Author's Name Masato Abe  
3rd Author's Affiliation Iwate University (Iwate Univ.)
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Speaker Author-1 
Date Time 2008-08-04 10:45:00 
Presentation Time 30 minutes 
Registration for EA 
Paper # EA2008-46 
Volume (vol) vol.108 
Number (no) no.179 
Page pp.7-12 
#Pages 6 
Date of Issue 2008-07-28 (EA) 

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