A Method to Improve the Performance of Active Noise Control System Based on Time Delay Estimation
Journal of Electrical and Electronic Engineering
Volume 7, Issue 5, October 2019, Pages: 120-125
Received: Oct. 13, 2019;
Published: Nov. 8, 2019
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Haotian Zhang, School of Electronic Information, Shanghai Dianji University, Shanghai, China
Wenhong Liu, School of Electronic Information, Shanghai Dianji University, Shanghai, China
Jinxi Hu, School of Electronic Information, Shanghai Dianji University, Shanghai, China
Keni Xu, School of Electronic Information, Shanghai Dianji University, Shanghai, China
Mianmian Wang, School of Electronic Information, Shanghai Dianji University, Shanghai, China
Hang Liu, School of Electronic Information, Shanghai Dianji University, Shanghai, China
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Noise control is a research topic that has been widely concerned for in recent years. When a noise space has a certain volume and/or with complex channel, the method of active noise control (ANC) can be used to reduce or eliminate noise interference. The main channel delay in the active noise control system has an important impact on the performance of the ANC system, however, the traditional method, such as filtered-x least mean square algorithm (FxLMS), lacks the estimation of the main channel delay. This results that the system output cannot be accurately synchronized. Especially in the case of time-varying delay, the effect is less desirable. In this paper, the correlation time delay estimation is combined with FxLMS. A method to improve the performance of active noise control system (CTDE-FxLMS) is proposed based on time delay estimation. In CTDE-FxLMS method, the correlation time delay estimation is used to calculate the main channel delay, and the frequency response of the main channel is calculated by FxLMS. CTDE-FxLMS method improves the synchronization accuracy between the system output and the original noise in the time domain and the frequency domain. The computer simulation results show that the CTDE-FxLMS method has better noise reduction effect than the FxLMS method both the conditions of fixed delay and time-varying delay.
Active Noise Control, Correlation Time Delay Estimation, FxLMS Algorithm, Time-varying Delay
To cite this article
A Method to Improve the Performance of Active Noise Control System Based on Time Delay Estimation, Journal of Electrical and Electronic Engineering.
Vol. 7, No. 5,
2019, pp. 120-125.
Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/
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