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Paper Abstract and Keywords
Presentation 2008-03-14 15:10
Improvement to Reference Signal used in Adaptive Filters for Periodic Noise Reduction
Tomoyuki Kamitani, Naohiro Toda (Aichi Pref. Univ.) MBE2007-134
Abstract (in Japanese) (See Japanese page) 
(in English) Biological signals such as electroencephalogram(EEG),electroretinogram(ERG), electromyogram(EMG) or electrocardiogram(ECG) are contaminated by large power-line interference. In spite of modern high performance instrumentation amplifiers, there are many cases in which it is difficult to remove such periodic (alternative) noise entirely. Adaptive filters with noise reference signal input have potential to do such noise reduction. However in actual situations, there are many cases where such adaptive filter fails in removing periodic noise. In this paper, we point out that this problem causes from ill condition of correlation matrix of reference signal. Namely, the condition number(eigenvalue spread) increases with amplitude variety of harmonics in the periodic noise. Furthermore, we propose a method which transforms reference signal into impluse sequence signal in order to improve condition.
Keyword (in Japanese) (See Japanese page) 
(in English) periodic noise elimination / adaptive filter / condition number / reference signal / impluse sequence signal / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 541, MBE2007-134, pp. 117-120, March 2008.
Paper # MBE2007-134 
Date of Issue 2008-03-06 (MBE) 
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 MBE2007-134

Conference Information
Committee NC MBE  
Conference Date 2008-03-12 - 2008-03-14 
Place (in Japanese) (See Japanese page) 
Place (in English) Tamagawa Univ 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To MBE 
Conference Code 2008-03-NC-MBE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Improvement to Reference Signal used in Adaptive Filters for Periodic Noise Reduction 
Sub Title (in English)  
Keyword(1) periodic noise elimination  
Keyword(2) adaptive filter  
Keyword(3) condition number  
Keyword(4) reference signal  
Keyword(5) impluse sequence signal  
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1st Author's Name Tomoyuki Kamitani  
1st Author's Affiliation Aichi Prefectural University (Aichi Pref. Univ.)
2nd Author's Name Naohiro Toda  
2nd Author's Affiliation Aichi Prefectural University (Aichi Pref. Univ.)
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Speaker Author-1 
Date Time 2008-03-14 15:10:00 
Presentation Time 20 minutes 
Registration for MBE 
Paper # MBE2007-134 
Volume (vol) vol.107 
Number (no) no.541 
Page pp.117-120 
#Pages 4 
Date of Issue 2008-03-06 (MBE) 

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