这是关于通信专业数字信号处理的一些FFT仿真程序，包括频谱分析，相位谱，零极点图等等。初学者如果有需要可以参考。-This is a program about FFT code of digital signal processing in communication engineering,which concludes spectrum anaysis,phase anaysis and z-plane and so on.if you are a fresher,you will lik