这是网上搜索到的FFT的程序，适合刚开始学习FFT的朋友。介绍了采样时间，采样频率等对FFT的影响，里面有我自己的注释，希望能够帮到你.需要的请拿走，不谢。-This is the online search to FFT program for just started learning FFT friend. Describes the effects of sampling time, the sampling frequency of the FFT, which has my own