感觉加权回波消除器的研究

A Study of Perceptually Weighted Echo Canceler

传统的自适应回波消除算法都是基于客观优化准则，而没有考虑回波消除的主观质量。本文提出在回波消除器中采用误差频率加权自适应滤波器结构，以充分利用人耳的听觉特性，提高回波消除的主观质量。客观测试和主观测试的仿真结果验证了新算法的有效性。

Traditional algorithms of adaptive echo canceler are all based on objective criteria, withoutconsideration of psycho-acoustic property. In this paper, an adaptive echo canceler using a frequency weighted errorfunction is investigated. The new algorithm can reshape the spectrum of the residual echo according to the inverse of thefrequency response of human ear and mnimize the echo audibility. Simulation results of objective evaluation andsubjective evaluation verify the effectiveness of the new algorithm.