小波变换处理带噪语音信号，对于低信噪比的情况下相当有效，直接改文件名就可完成-Wavelet Transform of Noisy Speech signal processing for low SNR case quite effectively, direct to the file name can be completed

对语音信号进行小波变换，达到将低信噪比的要求。(Wavelet transform is used to achieve low SNR requirements)