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Paper Abstract and Keywords
Presentation 2008-05-29 13:00
A Realization of Active Noise Control System for MR Noise. -- A Study on the Feedback ANC System --
Masahiro Kida, Ryotaro Hirayama, Yusuke Ono, Daisuke Tokunaga, Yoshinobu Kajikawa (Kansai Univ.), Tohru Tani, Yoshimasa Kurumi (Shiga Univ.), Yasuo Nomura (Kansai Univ.) EA2008-9 SIP2008-18
Abstract (in Japanese) (See Japanese page) 
(in English) MRI(Magnetic Resonance Imaging) machine is medical equipment system which has been used to obtain the cross-sectional image of the human body.
An open-configuration MR system is introduced at Shiga University of Medical Science in order to conduct microwave coaguration therapy by using near-real-time MR images.
MR systems generates a serious noise (about 120dBSPL).
Hence, operators and other medical staff (ex. nurses and anesthesists) is exposed to the large MR noise for many hours
and cannot communicate with each other.
This is an elevated risk of the operation.
We therefore attempt to implement an active noise control (ANC) system in order to reduce the MR noise.
However, MRI generates too intense magnetic field for dynamic acoustic equipment to be used.
In this paper, therefore, the cancellation performance of a feedback ANC system using piezo-electric loud speaker is demonstrated through experimental results in order to realize the availability of the feedback ANC system in magnetic field.
Keyword (in Japanese) (See Japanese page) 
(in English) active noise control / MRI / DSP / piezo-electric loud speaker / feedback ANC / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 70, SIP2008-18, pp. 19-24, May 2008.
Paper # SIP2008-18 
Date of Issue 2008-05-22 (EA, SIP) 
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. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF EA2008-9 SIP2008-18

Conference Information
Committee SIP EA  
Conference Date 2008-05-29 - 2008-05-30 
Place (in Japanese) (See Japanese page) 
Place (in English) Kansai Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SIP 
Conference Code 2008-05-SIP-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Realization of Active Noise Control System for MR Noise. 
Sub Title (in English) A Study on the Feedback ANC System 
Keyword(1) active noise control  
Keyword(2) MRI  
Keyword(3) DSP  
Keyword(4) piezo-electric loud speaker  
Keyword(5) feedback ANC  
1st Author's Name Masahiro Kida  
1st Author's Affiliation Kansai University (Kansai Univ.)
2nd Author's Name Ryotaro Hirayama  
2nd Author's Affiliation Kansai University (Kansai Univ.)
3rd Author's Name Yusuke Ono  
3rd Author's Affiliation Kansai University (Kansai Univ.)
4th Author's Name Daisuke Tokunaga  
4th Author's Affiliation Kansai University (Kansai Univ.)
5th Author's Name Yoshinobu Kajikawa  
5th Author's Affiliation Kansai University (Kansai Univ.)
6th Author's Name Tohru Tani  
6th Author's Affiliation Shiga University of Medical Science (Shiga Univ.)
7th Author's Name Yoshimasa Kurumi  
7th Author's Affiliation Shiga University of Medical Science (Shiga Univ.)
8th Author's Name Yasuo Nomura  
8th Author's Affiliation Kansai University (Kansai Univ.)
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Date Time 2008-05-29 13:00:00 
Presentation Time 25 
Registration for SIP 
Paper # IEICE-EA2008-9,IEICE-SIP2008-18 
Volume (vol) IEICE-108 
Number (no) no.68(EA), no.70(SIP) 
Page pp.19-24 
#Pages IEICE-6 
Date of Issue IEICE-EA-2008-05-22,IEICE-SIP-2008-05-22 

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