A VARIABLE STEP-SIZE FREQUENCY-DOMAIN ADAPTIVE FILTERING ALGORITHM FOR STEREOPHONIC ACOUSTIC ECHO CANCELLATION

被引:0
|
作者
Romoli, Laura [1 ]
Squartini, Stefano [1 ]
Piazza, Francesco [1 ]
机构
[1] Univ Politecn Marche, A3Lab, DIBET, I-60131 Ancona, Italy
关键词
LMS ALGORITHMS; LEARNING RATE; CONVERGENCE;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper a gradient adaptive step-size algorithm for frequency domain adaptive filtering is proposed: the step-size adaptation is performed by differentiating the time-domain block error at the output of the block adaptive filter with respect to the step-size. By using the results obtained through a rigorous mathematical treatment in the single-channel situation and in the presence of a partitioned adaptive filter, an adaptation rule valid for two-channel adaptive algorithms, which may be easily extended to multi-channel adaptive algorithms, is derived. Experimental results concerning stereophonic acoustic echo cancellation are reported, in order to validate the effectiveness of the proposed algorithm.
引用
收藏
页码:26 / 30
页数:5
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