中文说明： 验证可用，鲁棒性好，性能优越，双向PCS控制仿真，matlab小波分析程序，ML法能够很好的估计信号的信噪比,实现了对10个数字音的识别程。
English Description：
The simulation of two-way PCs control, matlab wavelet analysis program and ML method can well estimate the signal-to-noise ratio of the signal and realize the recognition of 10 digital tones.