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| Presentation | 2017-08-09 13:25 Influence of secondary path characteristic changes on ANC systems for periodic noise and a countermeasure against the changes. Taku Sugai, Nozomu Saito (Alpine)  EA2017-28 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | We investigated into malfunction caused by differences of characteristic between secondary paths and its models (modeling errors) on Active Noise Control (ANC) systems using Filtered-x LMS Algorithm, and invented a countermeasure against the malfunction. Especially, examination of ANC systems for single frequency noise was conducted particularly. First, we analyzed adaptation errors of adaptive filters caused by modeling errors theoretically, and considered the countermeasure against the adaptation errors. As a result of theoretical analysis, it was revealed that adaptive filters converged on optimum solutions despite existence of modeling errors if stability was retained. Therefore, robust ANC systems against modeling errors can be realized without deterioration of nose reduction performance by small additions of signal processing for keeping stability. In addition, both the results of the theoretical analysis and effectiveness of the countermeasure were confirmed by computer simulations that were executed by the same calculations as real ANC systems. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Active Noise Control / Periodic Noise / Filtered-x LMS Algorithm / Modeling error / Stability / Noise reduction performance / / | |
| Reference Info. | IEICE Tech. Rep., vol. 117, no. 170, EA2017-28, pp. 5-12, Aug. 2017. | |
| Paper # | EA2017-28 | |
| Date of Issue | 2017-08-02 (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 | EA2017-28 |
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| Conference Information | |
| Committee | EA ASJ-H |
| Conference Date | 2017-08-09 - 2017-08-10 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tohoku Univ., R. I. E. C. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Ultra-Realistic Acoustics, Engineering/Electro Acoustics, Psychological and Physiological Acoustics, and Related Topics |
| Paper Information | |
| Registration To | EA |
| Conference Code | 2017-08-EA-H |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Influence of secondary path characteristic changes on ANC systems for periodic noise and a countermeasure against the changes. |
| Sub Title (in English) | |
| Keyword(1) | Active Noise Control |
| Keyword(2) | Periodic Noise |
| Keyword(3) | Filtered-x LMS Algorithm |
| Keyword(4) | Modeling error |
| Keyword(5) | Stability |
| Keyword(6) | Noise reduction performance |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Taku Sugai |
| 1st Author's Affiliation | Alpine Electronics, Inc. (Alpine) |
| 2nd Author's Name | Nozomu Saito |
| 2nd Author's Affiliation | Alpine Electronics, Inc. (Alpine) |
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| Speaker | Author-1 |
| Date Time | 2017-08-09 13:25:00 |
| Presentation Time | 25 minutes |
| Registration for | EA |
| Paper # | EA2017-28 |
| Volume (vol) | vol.117 |
| Number (no) | no.170 |
| Page | pp.5-12 |
| #Pages | 8 |
| Date of Issue | 2017-08-02 (EA) |
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