aubio: spectral/test-filterbank_mel.c

aubio 0.4.9

spectral/test-filterbank_mel.c
#include <aubio.h>
int main (void)
{
uint_t samplerate = 16000; // samplerate of signal to filter
uint_t win_s = 512; // fft size
uint_t n_filters = 40; // 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
// create filterbank object
aubio_filterbank_t *o = new_aubio_filterbank (n_filters, win_s);
// assign Mel-frequency coefficients
aubio_filterbank_set_mel_coeffs_slaney (o, samplerate);
// apply filterbank ten times
uint_t n = 10;
while (n) {
aubio_filterbank_do (o, in_spec, out_filters);
n--;
}
// print out filter coefficients
fmat_t *coeffs; // pointer to the coefficients
coeffs = aubio_filterbank_get_coeffs (o);
fmat_print (coeffs);
//fvec_print (out_filters);
del_aubio_filterbank (o);
del_cvec (in_spec);
del_fvec (out_filters);
aubio_cleanup ();
return 0;
}