利用FFT计算频谱图

上传者: wanzhen4330 | 上传时间: 2020-01-03 11:39:00 | 文件大小: 1.47MB | 文件类型: rar
给出了完整的FFT的C语言代码,以及MATLAB的仿真效果,主要解决了FFT计算频谱图的问题。注意大部分周期信号的最小非零频率分量就是基波,但是还有很多信号并不是这样:比如y=sin(2πx) +sin(3πx)的信号周期为2,对应的基波角频率为π,而频谱图中角频率为π的那个点的幅度为0。

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