1.录制一段自己的语音信号，并对录制的信号进行采样；

2.画出采样后的语音信号的时域波形和频谱图；

3.给定滤波器的性能指标，采用窗函数法和双线性变换法设计滤波器，

并划出滤波器的频域响应；

4.用该滤波器对采集的信号进行滤波，画出滤波后信号的时域波形和频谱，

并对滤波前后的信号进行对比，分析信号的变化；

5.回放语音信号；

6.设计一个信号处理系统界面-1. Recorded their own voice for some signal, and recording the signal sampling　2. Draw samples of the voice signal after the time-domain waveform and frequency spectrum　3. Given filter performance indicators, using a window function method and dual- Design of linear transformation filters, and draw the filter frequency response　4. to use the filters on the collected signal filtering, after filtering the signal to draw the time-domain waveform and spectrum, and filtering of signals before and after contrast, analysis of signal changes　5. playback voice signal　6. to design a signal processing system interface