基于LMS的双向回波削除源码，不过回波幅度不要大于0.2,否则算法认为DOUBLE TALK DETECT。各位可修改此阀值，试试效果-based on the two-way LMS Echo slashing source, but not greater than the rate Echo 0.2, or that the algorithm ** DOUBLE TALK. You can modify this threshold, try Effect