//离散傅里叶变换 void dft(complex X[], complex x[], int N){ //X[]标识变换后频域,x[]为时域采样信号,下同 complex temp; int k, n; for (int k = 0; k < N; k++) { X[k].re = 0; X[k].im = 0; for (int n = 0; n < N; n++) { temp.re = (float)
离散傅⾥叶变换，逆变换（c语⾔）#include <stdio.h> #include <math.h> #include "dfc.h"#define pi 3.1415926 complex complexadd(complex a, complex b){ //复数加 complex rt;rt.re = a.re + b.re;rt.im = a.im + b.im;return rt;} complex complexMult(complex a, complex b){ /...