//离散傅里叶变换 voiddft(complex X[], complex x[],intN){//X[]标识变换后频域,x[]为时域采样信号,下同 complex temp; intk, n; for(intk = 0; k < N; k++) { X[k].re = 0; X[k].im = 0; for(intn = 0; n < N; n++) { temp.re = (float)cos(2*pi*k*n/N); tem...
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){ /...