采用变步长算法的无双端检测回声消除系统

Adaptive Acoustic Echo Cancellation System Without Double-Talk Detection Using VSS-NLMS Algorithm

提出了一种新型无双端检测的自适应回声消除系统,在与传统的回声消除系统比较过程中,本系统表现出了良好的性能,不但结构简单,计算量也小。模拟双端通信实验表明,该自适应滤波器工作正常,回声消除性能好,减少了采用传统的回声消除算法中双端检测错误造成语音切音现象和回声消除不干净的状况。

A novel echo cancellation system without double-talk detector is presented.Compared with a conventional echo cancellation system,the system has better performances.It has advantages of the simpler structure and the lower computation.In the double-talk case,the adaptive filter works normally and the echo cancellation performance is good,thus reducing the bad effects of echo cancellation caused by the error of the traditional double-talk detector.