signalprocess.h

FFT和Hilbert变换工具包

#define PI  3.141592653589793
#include "stdlib.h"
#include <math.h>

#include <complex>

using namespace std;

extern "C" int _stdcall  hilbert(int *data , int *filterdata, int dn);
extern "C" int _stdcall  firwin_e(int n,int band,int fl,int fh,int fs,int wn,int *data,int *result,int dn);
extern "C" int _stdcall  conv(int *h,int *data,int *result,int hn,int dn);


int fft(int *data,complex <double> *a,int L);
int ifft(complex <double> *a,int *data,int L);
double window(int type,int n,int i,double beta);
double kaiser(int i,int n,double beta);
double bessel0(double x);
int conv_f(double *h,int *data,int *result,int hn,int dn);
int fft_f(double *data,complex <double> *a,int L);