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| Presentation | 2011-07-15 16:30 Modified-Error Filtered-x algorithm employing linear prediction filter Shinya Okuno, Yoshinobu Kajikawa (Kansai Univ.)  EA2011-48 |
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| 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. The modified error feedback ANC system has an advantage that the convergence rate can be improved compared with the feedback ANC system using 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. Simulation results show that the proposed system is superior to the conventional system on the convergence rate and 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. 136, EA2011-48, pp. 33-38, July 2011. | |
| Paper # | EA2011-48 | |
| Date of Issue | 2011-07-08 (EA) | |
| 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 | EA2011-48 |
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| Conference Information | |
| Committee | EA |
| Conference Date | 2011-07-15 - 2011-07-15 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Campus Port Osaka |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Sound Field Measurement and Analysis, Active Control, and Related Topics |
| Paper Information | |
| Registration To | EA |
| Conference Code | 2011-07-EA |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Modified-Error Filtered-x algorithm employing linear prediction filter |
| Sub Title (in English) | |
| Keyword(1) | active noise control |
| Keyword(2) | modified error feedback ANC system |
| Keyword(3) | linear prediction filter |
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| 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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| Speaker | Author-1 |
| Date Time | 2011-07-15 16:30:00 |
| Presentation Time | 30 minutes |
| Registration for | EA |
| Paper # | EA2011-48 |
| Volume (vol) | vol.111 |
| Number (no) | no.136 |
| Page | pp.33-38 |
| #Pages | 6 |
| Date of Issue | 2011-07-08 (EA) |
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