spectral/test-mfcc.c

#include <aubio.h>

int main ()
{
  uint_t win_s = 512; // fft size
  uint_t n_filters = 40; // number of filters
  uint_t n_coefs = 13; // number of coefficients
  smpl_t samplerate = 16000.; // samplerate
  cvec_t *in = new_cvec (win_s); // input buffer
  fvec_t *out = new_fvec (n_coefs); // output coefficients

  // create mfcc object
  aubio_mfcc_t *o = new_aubio_mfcc (win_s, n_filters, n_coefs, samplerate);

  cvec_norm_set_all (in, 1.);
  aubio_mfcc_do (o, in, out);
  fvec_print (out);

  cvec_norm_set_all (in, .5);
  aubio_mfcc_do (o, in, out);
  fvec_print (out);

  // clean up
  del_aubio_mfcc (o);
  del_cvec (in);
  del_fvec (out);
  aubio_cleanup ();

  return 0;
}