用椭圆低通滤波器对语音信号进行滤波处理，实现降噪处理-The elliptic low pass filter is used to filter the speech signal, and the noise reduction processing is realized.

对采集的语音信号进行去噪处理，利用小波分析的方法解决这一个问题。(Noise reduction of the collected speech signal)