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A Modified Reference Signal Selection Method for Feed-Forward Active Road Noise Control System

A Modified Reference Signal Selection Method for Feed-Forward Active Road Noise Control System Active control of road noise has been widely recognized as a promising technology. For a feed-forward active road noise control system, the proper selection of the reference vibration signals is very important. It determines the theoretically optimal effect that the system can achieve. In order to achieve a reasonable selection of reference signals, a modified signal selection method is proposed in this paper. A test on road noise data acquisition and relevant analysis is conducted to decide the target frequency band for noise control. After that, an initial reference signal set is established and it is expanded by iteratively calculating the Fisher information matrix and the amount of new correlation information so that a reference signal set that has optimal multiple coherence with road noise is obtained. In the case study, a comparison between the traditional method and the proposed method is conducted. The results show that the proposed method can reach a higher average coherence coefficient and better noise reduction performance than the traditional method. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acoustics Australia Springer Journals

A Modified Reference Signal Selection Method for Feed-Forward Active Road Noise Control System

Zhou, Zhengdao; Chen, Shuming; Cai, Yaoyu; Zhang, Zhang
Acoustics Australia , Volume OnlineFirst – Mar 14, 2023
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Publisher
Springer Journals
Copyright
Copyright © Australian Acoustical Society 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
ISSN
0814-6039
eISSN
1839-2571
DOI
10.1007/s40857-023-00290-z
Publisher site
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Abstract

Active control of road noise has been widely recognized as a promising technology. For a feed-forward active road noise control system, the proper selection of the reference vibration signals is very important. It determines the theoretically optimal effect that the system can achieve. In order to achieve a reasonable selection of reference signals, a modified signal selection method is proposed in this paper. A test on road noise data acquisition and relevant analysis is conducted to decide the target frequency band for noise control. After that, an initial reference signal set is established and it is expanded by iteratively calculating the Fisher information matrix and the amount of new correlation information so that a reference signal set that has optimal multiple coherence with road noise is obtained. In the case study, a comparison between the traditional method and the proposed method is conducted. The results show that the proposed method can reach a higher average coherence coefficient and better noise reduction performance than the traditional method.

Journal

Acoustics Australia – Springer Journals

Published: Mar 14, 2023

Keywords: Active noise control; Road noise; Vibration signal selection; Multiple coherence; Fisher information matrix

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