LMS algorithm for active noise control with improved gradient estimate

被引：12
|
作者：
Sun, X [1 ]
Meng, G [1 ]
机构：
[1] Shanghai Jiao Tong Univ, State Key Lab Vibrat Shock & Noise, Shanghai 200030, Peoples R China
来源：
MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 2006年 / 20卷 / 04期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/j.ymssp.2004.12.007
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Most existed LMS algorithms have noisy gradient estimate since they use instantaneous square error to estimate ensemble average of the square errors. In this paper, a new type of LMS algorithm is developed for active noise control. The gradient estimate in the proposed algorithm is improved by using the weighted time average instead of the instantaneous value to approximate the ensemble average. Compared to the filtered-x LMS algorithm, the proposed algorithm is shown to have many improved convergence properties. Computer simulations are given to support the theoretical analysis. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：920 / 938
页数：19
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