int main() {
wave_object obj;
wt_object wt;
double *inp,*out,*diff;
int N, i,J;
FILE *ifp;
double temp[1200];
char *name = "db4";
obj = wave_init(name);// Initialize the wavelet
ifp = fopen(FILE_SIGNAL, "r");
i = 0;
if (!ifp) {
printf("Cannot Open File");
exit(100);
}
while (!feof(ifp)) {
fscanf(ifp, "%lf \n", &temp[i]);
i++;
}
N = 256;
inp = (double*)malloc(sizeof(double)* N);
out = (double*)malloc(sizeof(double)* N);
diff = (double*)malloc(sizeof(double)* N);
//wmean = mean(temp, N);
for (i = 0; i < N; ++i) {
inp[i] = temp[i];
//printf("%g \n",inp[i]);
}
J = 3;
wt = wt_init(obj, "dwt", N, J);// Initialize the wavelet transform object
setDWTExtension(wt, "sym");// Options are "per" and "sym". Symmetric is the default option
setWTConv(wt, "direct");
dwt(wt, inp);// Perform DWT
//DWT output can be accessed using wt->output vector. Use wt_summary to find out how to extract appx and detail coefficients
for (i = 0; i < wt->outlength; ++i) {
// printf("%g ",wt->output[i]);
}
idwt(wt, out);// Perform IDWT (if needed)
// Test Reconstruction
for (i = 0; i < wt->siglength; ++i) {
diff[i] = out[i] - inp[i];
}
printf("\n MAX %g \n", absmax(diff, wt->siglength)); // If Reconstruction succeeded then the output should be a small value.
wt_summary(wt);// Prints the full summary.
wave_free(obj);
wt_free(wt);
free(inp);
free(out);
free(diff);
return 0;
}
int main() {
wave_object obj;
wt_object wt;
double *inp, *out, *diff;
int N, i, J;
FILE *ifp;
double temp[1200];
char *name = "db4";
obj = wave_init(name);
wave_summary(obj);
ifp = fopen("signal.txt", "r");
i = 0;
if (!ifp) {
printf("Cannot Open File");
exit(100);
}
while (!feof(ifp)) {
fscanf(ifp, "%lf \n", &temp[i]);
i++;
}
N = 177;
fclose(ifp);
inp = (double*)malloc(sizeof(double)* N);
out = (double*)malloc(sizeof(double)* N);
diff = (double*)malloc(sizeof(double)* N);
//wmean = mean(temp, N);
for (i = 0; i < N; ++i) {
inp[i] = temp[i];
//printf("%g \n",inp[i]);
}
J = 2;
wt = wt_init(obj, "modwt", N, J);// Initialize the wavelet transform object
modwt(wt, inp);// Perform MODWT
//MODWT output can be accessed using wt->output vector. Use wt_summary to find out how to extract appx and detail coefficients
for (i = 0; i < wt->outlength; ++i) {
printf("%g ",wt->output[i]);
}
imodwt(wt, out);// Perform ISWT (if needed)
// Test Reconstruction
for (i = 0; i < wt->siglength; ++i) {
diff[i] = out[i] - inp[i];
}
printf("\n MAX %g \n", absmax(diff, wt->siglength));// If Reconstruction succeeded then the output should be a small value.
wt_summary(wt);// Prints the full summary.
wave_free(obj);
wt_free(wt);
free(inp);
free(out);
free(diff);
return 0;
}