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 |
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 |
EA2008-9 SIP2008-18 |
|