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Paper Abstract and Keywords
Presentation 2012-01-27 14:45
Modified Error Feedback ANC System Robust Against Disturbance
Shinya Okuno, Yoshinobu Kajikawa (Kansai Univ.) EA2011-119
Abstract (in Japanese) (See Japanese page) 
(in English) Feedback active noise control (ANC) system which is effective for
narrowband noise can get an input signal and monitor the noise
reduction performance with only an error microphone. Ordinary ANC
systems generally have the secondary path following the noise control
filter. Therefore, the noise control filter should be updated by
the Filtered-x algorithm. However, the Filtered-x algorithm diverges if
the phase error of the secondary path model does not satisfy the
stability condition $-\pi/2$ to $\pi/2$. In this paper, we focus on
the modified error feedback ANC system which can update the noise
control filter by ordinary adaptive algorithm like NLMS instead of the
Filtered-x algorithm. However, the modified error feedback ANC system has a possibility of divergence because the disturbance of broadband noise such as background noise always corrupts the input signal for the system. In this paper, we propose a modified error feedback ANC system using a linear prediction filter in order to suppress the broadband disturbance.
When we use the MR noise as the noise targeted for control, noise reduction experiments show that the proposed system is superior to the conventional system on the noise attenuation level while maintaining the stability.
Keyword (in Japanese) (See Japanese page) 
(in English) active noise control / modified error feedback ANC system / linear prediction filter / / / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 402, EA2011-119, pp. 95-100, Jan. 2012.
Paper # EA2011-119 
Date of Issue 2012-01-19 (EA) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF EA2011-119

Conference Information
Committee EA US  
Conference Date 2012-01-26 - 2012-01-27 
Place (in Japanese) (See Japanese page) 
Place (in English) Kansai Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) [Joint Meeting on Acoustics and Ultrasonics Subsociety] Engineering/Electro Acoustics, Ultrasonic and Underwater Acoustics,and Related Topics 
Paper Information
Registration To EA 
Conference Code 2012-01-EA-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Modified Error Feedback ANC System Robust Against Disturbance 
Sub Title (in English)  
Keyword(1) active noise control  
Keyword(2) modified error feedback ANC system  
Keyword(3) linear prediction filter  
1st Author's Name Shinya Okuno  
1st Author's Affiliation Kansai University (Kansai Univ.)
2nd Author's Name Yoshinobu Kajikawa  
2nd Author's Affiliation Kansai University (Kansai Univ.)
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Date Time 2012-01-27 14:45:00 
Presentation Time 30 
Registration for EA 
Paper # IEICE-EA2011-119 
Volume (vol) IEICE-111 
Number (no) no.402 
Page pp.95-100 
#Pages IEICE-6 
Date of Issue IEICE-EA-2012-01-19 

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