信号序列的DFT本身就是信号频谱的采样集，所以DFT可直接用于分析信号的频谱。快速傅立叶变换是一种有 效、实用的信号DFT算法。文章通过对DIT－FFT算法的详细分析，提出了一种计算机软件仿真信号频谱分析方案，并给出了 关键算法的C 语言程序。-Signal sequence of the DFT spectrum of the sample itself is a set of signals, so the DFT can be directly used to analyze th

数字信号处理，快速傅里叶变换，基2-DIT-FFT.很好用！-Digital signal processing, fast Fourier transform, the base 2-DIT-FFT. Good use!

1) Goertzel algorithm 2) Chirp transform algorithm 3) Verification of signal flow graphs for DIT and DIF FFT algorithm 4) Elapsed CPU time for DFT and FFT computation 5) Alternative IDFT computations