次程序包含副立叶变换，快速傅立叶变换 ，快速傅立叶反变换变换-meeting included Vice procedures FFT, Fast Fourier Transform, Fast Fourier Transform - Transform

快速傅立叶变换（FFT）算法实现 将DFT算法与FFT算法计算时间进行比较，分析二者的效率和精确差异。-Fast Fourier Transform (FFT) algorithm to DFT algorithm and FFT algorithm for computing time to carry out comparative analysis between the two differences in the efficiency and precision.