fft/apFFT频谱校正方法，初稿，不保证正确性-fft/apFFT spectrum correction method, the first draft, does not guarantee the correctness of

FFT和apFFT校正程序,通过计算可以得到傅里叶变换的频率校正值、振幅校正值、初相位校正值-FFT and apFFT calibration procedures, frequency correction value obtained by calculating the amplitude correction, the initial phase correction

全相位FFT变换，适用于对不同频率波形进行频谱分析(All phase FFT transform is suitable for spectrum analysis for different frequency waveforms)