摘要
网络之间互连的协议(IP,Internet Protocol)电话回声消除问题一直都是研究的热点,通常使用自适应滤波算法来消除回声,但其收敛速度和稳态失调之间的矛盾是回声消除需要解决的一个重要问题。研究一种组合比例自适应滤波算法,按照一定的比例组合两种具有一定互补性能的算法,能够有效解决收敛速度和稳态失调。通过MATLAB仿真分析,证明了组合比例自适应滤波算法具有更快的收敛速度和良好的稳态特性。
It is a significant problem that how to solve effectively,through adaptive filtering algorithm,the conflict between convergence speed and steady misalignment in echo cancellation of IP telephone system.This paper presents a scheme in adaptive combination of different proportionate filtering algorithms,so that the convergence speed and steadiness imbalance could be improved.MATLAB simulation indicates that the adaptive combination of proportionate filters is effective in enhancement of convergence speed and steadiness.
出处
《通信技术》
2011年第3期68-70,82,共4页
Communications Technology
关键词
滤波
回声消除
算法
组合比例
filtering
echo cancellation
algorithm
proportionate combination
