数字信号实验程序和截图 窗函数法设计FIR滤波器 窗函数法设计FIR滤波器 用双线变换法设计IIR滤波器 ：应用FFT对信号进行频谱分析

Digital Signal Experiment Program and Screenshot Window Function Method Design FIR Filter Window Function Method Design FIR Filter Design IIR Filter with Two-Line Transform Method: Apply FFT to Spectrum Analysis of Signal