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

页码：37 / 40

页数：4

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