Feedforward active noise control with a new variable tap-length and step-size filtered-X LMS algorithm

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题名:	Feedforward active noise control with a new variable tap-length and step-size filtered-X LMS algorithm
作者:	張大中;Chang, Dah-Chung;Chu, Fei-Tao
贡献者:	資訊電機學院通訊工程學系
关键词:	Active noise control;Algorithms;Convergence;Delays;exponential decay response;filtered-X LMS;Least squares approximations;mean-square deviation;Microphones;Noise;Noise control;Noise measurement;noise reduction ratio;secondary path model;Vectors
日期:	2014-01-01
上传时间:	2026-04-23 13:02:10 (UTC+8)
出版者:	Institute of Electrical and Electronics Engineers Inc.;Piscataway: IEEE
摘要:	摘要： The fixed tap-length and step-size filtered-X least mean-square (FxLMS) algorithm is conventionally used in active noise control (ANC) systems. A tradeoff between the performance and the convergence rate is a well-known problem due to the choice of the step size. Although the variable-step-size FxLMS algorithms have been proposed for fast convergence, a long tap-length filter is frequently required in order to deal with different environments such that the convergence rate is still subject to a small step size for the long tap length. In this paper, we study a new ANC system with a variable tap-length and step-size FxLMS algorithm. Based on the assumption of an unsymmetric and two-sided exponential decay response model for the ANC control filter, the new FxLMS algorithm has the minimum mean-square deviation for the optimal filter coefficients. In the online secondary path modeling ANC system, simulation results show that the new algorithm with different kind of variable step sizes can provide significant improvements of convergence rate and noise reduction ratio, compared to the fixed-tap-length FxLMS algorithms. 其他題名： TASLP 出版者： Piscataway: IEEE 出版日期： 2014-02-01 出處： IEEE/ACM transactions on audio, speech, and language processing, 2014-02, Vol.22 (2), p.542-555 資源來源： IEEE Electronic Library (IEL) 版權： Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) Feb 2014 識別號： ISSN: 2329-9290 識別號： EISSN: 2329-9304 識別號： DOI: 10.1109/TASLP.2013.2297016 識別號： CODEN: ITASD8
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