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Paper Abstract and Keywords
Presentation 2010-05-27 10:55
Active Noise Control for MR Noise
Yoshinobu Kajikawa, Masahiro Kida, Ryotaro Hirayama (Kansai Univ.), Tohru Tani, Yoshimasa Kurumi (Shiga Univ. of Medical Sci.) EA2010-14 SIP2010-14 SP2010-14
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes an active noise control (ANC) system reducing periodic noises generated under the high-field area such as a noise generated from magnetic resonance imaging (MRI) device (we call MR noise). The proposed ANC system utilizes optical microphones and piezo-electric loudspeakers because specific acoustic equipment is required to overcome the high-field problem, and is formed by a head-mounted structure to control noise near user's ears and make up for the lack of output level of the piezo-electric loudspeaker. Moreover, the internal model control (IMC) based feedback ANC is employed because the MR noise consists of some periodic components and is predictable. Some experimental results demonstrate that the proposed ANC system (head-mounted structure) can significantly reduce the MR noise by approximately 20 dB even if the imaging mode changes frequently under the high-field in an actual MRI room.
Keyword (in Japanese) (See Japanese page) 
(in English) active noise control / magnetic resonance imaging device / optical microphone / piezo-electric loudspeaker / digital signal processor / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 54, EA2010-14, pp. 79-84, May 2010.
Paper # EA2010-14 
Date of Issue 2010-05-19 (EA, SIP, SP) 
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 EA2010-14 SIP2010-14 SP2010-14

Conference Information
Committee SP EA SIP  
Conference Date 2010-05-26 - 2010-05-27 
Place (in Japanese) (See Japanese page) 
Place (in English) Konan Univ. (Hirao Seminar House) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Speech, Engineering/Electro Acoustics, Signal Processing,and Related Topics 
Paper Information
Registration To EA 
Conference Code 2010-05-SP-EA-SIP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Active Noise Control for MR Noise 
Sub Title (in English)  
Keyword(1) active noise control  
Keyword(2) magnetic resonance imaging device  
Keyword(3) optical microphone  
Keyword(4) piezo-electric loudspeaker  
Keyword(5) digital signal processor  
1st Author's Name Yoshinobu Kajikawa  
1st Author's Affiliation Kansai University (Kansai Univ.)
2nd Author's Name Masahiro Kida  
2nd Author's Affiliation Kansai University (Kansai Univ.)
3rd Author's Name Ryotaro Hirayama  
3rd Author's Affiliation Kansai University (Kansai Univ.)
4th Author's Name Tohru Tani  
4th Author's Affiliation Shiga University of Medical Science (Shiga Univ. of Medical Sci.)
5th Author's Name Yoshimasa Kurumi  
5th Author's Affiliation Shiga University of Medical Science (Shiga Univ. of Medical Sci.)
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Date Time 2010-05-27 10:55:00 
Presentation Time 25 
Registration for EA 
Paper # IEICE-EA2010-14,IEICE-SIP2010-14,IEICE-SP2010-14 
Volume (vol) IEICE-110 
Number (no) no.54(EA), no.55(SIP), no.56(SP) 
Page pp.79-84 
#Pages IEICE-6 
Date of Issue IEICE-EA-2010-05-19,IEICE-SIP-2010-05-19,IEICE-SP-2010-05-19 

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