说明: 傅里叶变换MATLAB程序% % Fast Fourier transform of a column vector ft that is NUM length. % % The flag_type identify FFT type, 1 for cos FFT,-1 for sin FFT;otherwise % % the normal FFT. If flag_invs ==-1 means the inverse FFT is used. <bjfyk> 上传 | 大小:2kb