这是一个很好的频域分块自适应滤波的程序，应用于回声消除上，并与NNLMS自适应滤波做了运行速度的比较,FLMS比NLMS快几十倍。 -This is a good frequency-domain block adaptive filtering program on the used in echo cancellation and speed comparison with NNLMS adaptive filtering FLMS several times faster than t