%0 Journal Article
%T Multi-rate Updated Adaptive Algorithm Applied to Acoustic Echo Cancellation<br>变速率更新自适应算法在回声抵消中的应用
%A DONG Hang
%A SUN Hong
%A <br>董航
%A 孙洪
%J 自动化学报
%D 2008
%I 
%X By analysing the actual room acoustic environment, this paper presents a novel algorithm for acoustic echo cancel- lation,which can dynamically change the coefficients update- rate of the adaptive filter.This algorithm builds up a nonlinear function relationship between update-rate and the error signal. The update-rate of the coefficients increases automatically when the environment varies,while it would be smaller in a stable state,which can lead to significant reduction in the computa- tional burden.Theoretical analysis and computer simulations indicate that the convergence and tracking properties of this al- gerithm are as good as the traditional algorithms.
%K Adaptive filter
%K acoustic echo cancellation
%K multiupdate-rate
%K computational complexity<br>自适应滤波器
%K 回声抵消
%K 变速率
%K 运算量
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=E76622685B64B2AA896A7F777B64EB3A&aid=A06C66047CA08DE162406C17F6DE61BB&yid=67289AFF6305E306&vid=339D79302DF62549&iid=9CF7A0430CBB2DFD&sid=01A9864A3FFB986F&eid=F61A98B4CFAD5F2A&journal_id=0254-4156&journal_name=自动化学报&referenced_num=0&reference_num=12