Introduction - If you have any usage issues, please Google them yourself
Introduced the discrete Fourier transform (DFT) is a general method of the spectrum analysis of the sampled waveform data file, and in order to improve the operational efficiency and save the intermediate storage unit, culminating in the adoption of the decimation in time parity decomposition of the Cooley Tukey algorithm to realize the fast discrete Fourier transform, the sampling data of efficient spectrum analysis, and Microsoft Visual C++ 6.0 to programmed