kopia lustrzana https://github.com/Dsplib/libdspl-2.0
43 wiersze
959 B
C
43 wiersze
959 B
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "dspl.h"
|
|
|
|
#define ORD 3
|
|
#define N 1000
|
|
|
|
|
|
int main()
|
|
{
|
|
void* handle; // DSPL handle
|
|
handle = dspl_load(); // Load DSPL function
|
|
|
|
double a[ORD+1], b[ORD+1];
|
|
double Rp = 1.0;
|
|
double w[N], mag[N], phi[N], tau[N];
|
|
|
|
|
|
int k;
|
|
int res = butter_ap(Rp, ORD, b, a);
|
|
if(res != RES_OK)
|
|
printf("error code = 0x%8x\n", res);
|
|
|
|
for(k = 0; k < ORD+1; k++)
|
|
printf("b[%2d] = %9.3f a[%2d] = %9.3f\n", k, b[k], k, a[k]);
|
|
|
|
|
|
logspace(-2.0, 2.0, N , DSPL_SYMMETRIC, w);
|
|
freqs_resp(b, a, ORD, w, N, DSPL_FLAG_LOG|DSPL_FLAG_UNWRAP, mag, phi, tau);
|
|
|
|
writetxt(w, mag, N, "dat/butter_ap_test_mag.txt");
|
|
writetxt(w, phi, N, "dat/butter_ap_test_phi.txt");
|
|
writetxt(w, tau, N, "dat/butter_ap_test_tau.txt");
|
|
|
|
dspl_free(handle); // free dspl handle
|
|
|
|
res = system("gnuplot -p gnuplot/butter_ap_test.plt");
|
|
|
|
return 0;
|
|
}
|
|
|