说明：  1.基于MATLAB对有噪音语音信号进行处理，综合运用数字信号处理的理论知识对加噪语音信号进行时域、频域分析和滤波； 2.在设计实现的过程中，要求设计滤波器，对模拟加噪语音信号进行低通滤波、高通滤波及带通滤波； 3.利用MATLAB完成设计中的计算与图形绘制。
(1. the noisy speech signal is processed based on MATLAB, and the time domain, frequency domain analysis and filtering of the noisy speech signal are carried out by using the theoretical knowledge of digital signal processing; 2. in the process of design and implementation, it is required to design filter, which can perform low-pass filtering, high pass filtering and band-pass filtering for analog noise added speech signal; 3. the calculation and graphics drawing in the design are completed by MATLAB.)