回声消除系统使用自适应滤波器模拟回声信道，自适应滤波器的阶数对回声消除效果具有重要的影响，合适的阶数可以提高回声消除效果。通过回声消除仿真对比实验显示，本算法的滤波器失准系数低于 NLMS、PNLMS 算法。-The echo cancellation system uses an adaptive filter to simulate the echo channel. The order of the adaptive filter has an important effect on the echo cancellation effect. The appropriate order can improve the echo cancellation effectThe experimental results show that the algorithm has no less than NLMS and PNLMS algorithm..