aubio: spectral/test-filterbank.c

aubio 0.4.9

spectral/test-filterbank.c
#include <aubio.h>
int main (void)
{
uint_t win_s = 1024; // window size
uint_t n_filters = 13; // number of filters
cvec_t *in_spec = new_cvec (win_s); // input vector of samples
fvec_t *out_filters = new_fvec (n_filters); // per-band outputs
if (new_aubio_filterbank(0, win_s)) return 1;
if (new_aubio_filterbank(n_filters, 0)) return 1;
// create filterbank object
aubio_filterbank_t *o = new_aubio_filterbank (n_filters, win_s);
smpl_t power = aubio_filterbank_get_power(o);
smpl_t norm = aubio_filterbank_get_norm(o);
if (aubio_filterbank_set_power(o, power)) {
return 1;
}
if (aubio_filterbank_set_norm(o, norm)) {
return 1;
}
// apply filterbank ten times
uint_t n = 10;
while (n) {
aubio_filterbank_do (o, in_spec, out_filters);
n--;
}
// print out filterbank coeffs
fmat_t *coeffs; // pointer to the coefficients
coeffs = aubio_filterbank_get_coeffs (o);
fmat_print (coeffs);
aubio_filterbank_set_coeffs (o, coeffs);
coeffs = aubio_filterbank_get_coeffs (o);
fmat_print (coeffs);
//fvec_print (out_filters);
// clean up
del_aubio_filterbank (o);
del_cvec (in_spec);
del_fvec (out_filters);
aubio_cleanup ();
return 0;
}