说明：  语音信号的采集与处理 采集语音信号后，利用MATLAB软件平台进行频谱分析；并对所采集的语音信号加入干扰噪声，对加入噪声的信号进行频谱分析，设计合适的滤波器滤除噪声，恢复原信号。
(Collection and processing of speech signals After the voice signal acquisition using MATLAB software platform for spectral analysis voice signal and noise interference join collected, adding noise to the signal spectrum analysis, design appropriate filter to filter out the noise, to restore the original signal.)