uint_t aubio_onset_set_default_parameters (aubio_onset_t * o, const char_t * onset_mode)
{
uint_t ret = AUBIO_OK;
/* set some default parameter */
aubio_onset_set_threshold (o, 0.3);
aubio_onset_set_delay (o, 4.3 * o->hop_size);
aubio_onset_set_minioi_ms (o, 50.);
aubio_onset_set_silence (o, -70.);
// disable spectral whitening
aubio_onset_set_awhitening (o, 0);
// disable logarithmic magnitude
aubio_onset_set_compression (o, 0.);
/* method specific optimisations */
if (strcmp (onset_mode, "energy") == 0) {
} else if (strcmp (onset_mode, "hfc") == 0 || strcmp (onset_mode, "default") == 0) {
aubio_onset_set_threshold (o, 0.058);
aubio_onset_set_compression (o, 1.);
} else if (strcmp (onset_mode, "complexdomain") == 0
|| strcmp (onset_mode, "complex") == 0) {
aubio_onset_set_delay (o, 4.6 * o->hop_size);
aubio_onset_set_threshold (o, 0.15);
aubio_onset_set_awhitening(o, 1);
aubio_onset_set_compression (o, 1.);
} else if (strcmp (onset_mode, "phase") == 0) {
o->apply_compression = 0;
aubio_onset_set_awhitening (o, 0);
} else if (strcmp (onset_mode, "wphase") == 0) {
// use defaults for now
} else if (strcmp (onset_mode, "mkl") == 0) {
aubio_onset_set_threshold (o, 0.05);
aubio_onset_set_awhitening(o, 1);
aubio_onset_set_compression (o, 0.02);
} else if (strcmp (onset_mode, "kl") == 0) {
aubio_onset_set_threshold (o, 0.35);
aubio_onset_set_awhitening(o, 1);
aubio_onset_set_compression (o, 0.02);
} else if (strcmp (onset_mode, "specflux") == 0) {
aubio_onset_set_threshold (o, 0.18);
aubio_onset_set_awhitening(o, 1);
aubio_spectral_whitening_set_relax_time(o->spectral_whitening, 100);
aubio_spectral_whitening_set_floor(o->spectral_whitening, 1.);
aubio_onset_set_compression (o, 10.);
} else if (strcmp (onset_mode, "specdiff") == 0) {
} else if (strcmp (onset_mode, "old_default") == 0) {
// used to reproduce results obtained with the previous version
aubio_onset_set_threshold (o, 0.3);
aubio_onset_set_minioi_ms (o, 20.);
aubio_onset_set_compression (o, 0.);
} else {
AUBIO_WRN("onset: unknown spectral descriptor type %s, "
"using default parameters.\n", onset_mode);
ret = AUBIO_FAIL;
}
return ret;
}
/* Allocate memory for an onset detection */
aubio_onset_t * new_aubio_onset (const char_t * onset_mode,
uint_t buf_size, uint_t hop_size, uint_t samplerate)
{
aubio_onset_t * o = AUBIO_NEW(aubio_onset_t);
/* check parameters are valid */
if ((sint_t)hop_size < 1) {
AUBIO_ERR("onset: got hop_size %d, but can not be < 1\n", hop_size);
goto beach;
} else if ((sint_t)buf_size < 2) {
AUBIO_ERR("onset: got buffer_size %d, but can not be < 2\n", buf_size);
goto beach;
} else if (buf_size < hop_size) {
AUBIO_ERR("onset: hop size (%d) is larger than win size (%d)\n", buf_size, hop_size);
goto beach;
} else if ((sint_t)samplerate < 1) {
AUBIO_ERR("onset: samplerate (%d) can not be < 1\n", samplerate);
goto beach;
}
/* store creation parameters */
o->samplerate = samplerate;
o->hop_size = hop_size;
/* allocate memory */
o->pv = new_aubio_pvoc(buf_size, o->hop_size);
o->pp = new_aubio_peakpicker();
o->od = new_aubio_specdesc(onset_mode,buf_size);
o->fftgrain = new_cvec(buf_size);
o->desc = new_fvec(1);
/* set some default parameter */
aubio_onset_set_threshold (o, 0.3);
aubio_onset_set_delay(o, 4.3 * hop_size);
aubio_onset_set_minioi_ms(o, 20.);
aubio_onset_set_silence(o, -70.);
/* initialize internal variables */
o->last_onset = 0;
o->total_frames = 0;
return o;
beach:
AUBIO_FREE(o);
return NULL;
}
uint_t aubio_onset_set_delay_s(aubio_onset_t * o, smpl_t delay) {
return aubio_onset_set_delay (o, delay * o->samplerate);
}
