（1）　　熟悉连续信号经理想采样前后的频谱变化关系，加深对时域采样定理的理解．

（2）　　熟悉时域离散系统的时域特性

（3）　　利用卷积方法观察分析系统的时域特性．

（4）　　掌握序列傅立叶变换的计算机实现方法，利用序列的傅立叶变换对连续信号，离散信号及系统响应进行频域分析．

-(1) familiar with the continuous signal to the manager before and after the sampling of the spectrum changes relations and deepen the time-domain sampling theorem understanding. (2) familiar with the time-domain system discrete time-domain (3) using deconvolution method of analysis in time domain characteristics. (4) master sequence Fourier Transform computer, using the Fourier transform sequence of continuous signals, Discrete signal system response and frequency domain analysis.