A variable step-size for frequency-domain acoustic echo cancellation

被引：0
作者：
Zhou, Yin [1 ]
Li, Xiaodong [1 ]
机构：
[1] Chinese Acad Sci, Inst Acoust, Beijing 100080, Peoples R China
来源：
2007 IEEE WORKSHOP ON APPLICATIONS OF SIGNAL PROCESSING TO AUDIO AND ACOUSTICS | 2007年
关键词：
D O I：
暂无
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
The presence of near-end speech and ambient noise in acoustic echo cancellation makes it necessary for the adaptive filter to introduce a variable step-size to achieve high robustness and low residual error. In this paper, an optimal bin-wise block-varying step-size for the frequency-domain adaptive filter algorithm is derived and its connection to a magnitude-squared coherence (MSC) is revealed. A specific MSC estimation approach is proposed and methods to mitigate the estimation errors are discussed. Simulation results confirm that the estimated optimal step-size alone well controls the filter adaptation.
引用
收藏
页码：37 / 40
页数：4
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