int main ()
{
aubio_filter_t * f;
uint_t rates[] = { 8000, 16000, 22050, 44100, 96000, 192000};
uint_t nrates = 6;
uint_t samplerate, i = 0;
for ( samplerate = rates[i]; i < nrates ; i++ ) {
f = new_aubio_filter_c_weighting (samplerate);
del_aubio_filter (f);
f = new_aubio_filter (5);
aubio_filter_set_c_weighting (f, samplerate);
del_aubio_filter (f);
}
// samplerate unknown
f = new_aubio_filter_c_weighting (4200);
del_aubio_filter (f);
// order to small
f = new_aubio_filter (2);
aubio_filter_set_c_weighting (f, samplerate);
del_aubio_filter (f);
// order to big
f = new_aubio_filter (12);
aubio_filter_set_c_weighting (f, samplerate);
del_aubio_filter (f);
return 0;
}
int main (void)
{
uint_t win_s = 16; // window size
uint_t impulse_at = win_s / 2;
fvec_t *in = new_fvec (win_s); // input buffer
fvec_t *out = new_fvec (win_s); // input buffer
aubio_filter_t *o = new_aubio_filter_c_weighting (44100);
in->data[impulse_at] = 0.5;
fvec_print (in);
aubio_filter_do (o, in);
fvec_print (in);
del_aubio_filter (o);
o = new_aubio_filter_a_weighting (32000);
in->data[impulse_at] = 0.5;
fvec_print (in);
aubio_filter_do_outplace (o, in, out);
fvec_print (out);
aubio_filter_set_a_weighting (o, 32000);
in->data[impulse_at] = 0.5;
fvec_print (in);
aubio_filter_do_filtfilt (o, in, out);
fvec_print (out);
del_fvec (in);
del_fvec (out);
del_aubio_filter (o);
aubio_cleanup ();
return 0;
}
aubio_pitch_t *
new_aubio_pitch (const char_t * pitch_mode,
uint_t bufsize, uint_t hopsize, uint_t samplerate)
{
aubio_pitch_t *p = AUBIO_NEW (aubio_pitch_t);
aubio_pitch_type pitch_type;
if (strcmp (pitch_mode, "mcomb") == 0)
pitch_type = aubio_pitcht_mcomb;
else if (strcmp (pitch_mode, "yinfft") == 0)
pitch_type = aubio_pitcht_yinfft;
else if (strcmp (pitch_mode, "yin") == 0)
pitch_type = aubio_pitcht_yin;
else if (strcmp (pitch_mode, "schmitt") == 0)
pitch_type = aubio_pitcht_schmitt;
else if (strcmp (pitch_mode, "fcomb") == 0)
pitch_type = aubio_pitcht_fcomb;
else if (strcmp (pitch_mode, "specacf") == 0)
pitch_type = aubio_pitcht_specacf;
else if (strcmp (pitch_mode, "default") == 0)
pitch_type = aubio_pitcht_default;
else {
AUBIO_ERR ("unknown pitch detection method %s, using default.\n",
pitch_mode);
pitch_type = aubio_pitcht_default;
}
// check parameters are valid
if ((sint_t)hopsize < 1) {
AUBIO_ERR("pitch: got hopsize %d, but can not be < 1\n", hopsize);
goto beach;
} else if ((sint_t)bufsize < 1) {
AUBIO_ERR("pitch: got buffer_size %d, but can not be < 1\n", bufsize);
goto beach;
} else if (bufsize < hopsize) {
AUBIO_ERR("pitch: hop size (%d) is larger than win size (%d)\n", bufsize, hopsize);
goto beach;
} else if ((sint_t)samplerate < 1) {
AUBIO_ERR("pitch: samplerate (%d) can not be < 1\n", samplerate);
goto beach;
}
p->samplerate = samplerate;
p->type = pitch_type;
aubio_pitch_set_unit (p, "default");
p->bufsize = bufsize;
p->silence = DEFAULT_PITCH_SILENCE;
p->conf_cb = NULL;
switch (p->type) {
case aubio_pitcht_yin:
p->buf = new_fvec (bufsize);
p->p_object = new_aubio_pitchyin (bufsize);
p->detect_cb = aubio_pitch_do_yin;
p->conf_cb = (aubio_pitch_get_conf_t)aubio_pitchyin_get_confidence;
aubio_pitchyin_set_tolerance (p->p_object, 0.15);
break;
case aubio_pitcht_mcomb:
p->filtered = new_fvec (hopsize);
p->pv = new_aubio_pvoc (bufsize, hopsize);
p->fftgrain = new_cvec (bufsize);
p->p_object = new_aubio_pitchmcomb (bufsize, hopsize);
p->filter = new_aubio_filter_c_weighting (samplerate);
p->detect_cb = aubio_pitch_do_mcomb;
break;
case aubio_pitcht_fcomb:
p->buf = new_fvec (bufsize);
p->p_object = new_aubio_pitchfcomb (bufsize, hopsize);
p->detect_cb = aubio_pitch_do_fcomb;
break;
case aubio_pitcht_schmitt:
p->buf = new_fvec (bufsize);
p->p_object = new_aubio_pitchschmitt (bufsize);
p->detect_cb = aubio_pitch_do_schmitt;
break;
case aubio_pitcht_yinfft:
p->buf = new_fvec (bufsize);
p->p_object = new_aubio_pitchyinfft (samplerate, bufsize);
p->detect_cb = aubio_pitch_do_yinfft;
p->conf_cb = (aubio_pitch_get_conf_t)aubio_pitchyinfft_get_confidence;
aubio_pitchyinfft_set_tolerance (p->p_object, 0.85);
break;
case aubio_pitcht_specacf:
p->buf = new_fvec (bufsize);
p->p_object = new_aubio_pitchspecacf (bufsize);
p->detect_cb = aubio_pitch_do_specacf;
p->conf_cb = (aubio_pitch_get_conf_t)aubio_pitchspecacf_get_tolerance;
aubio_pitchspecacf_set_tolerance (p->p_object, 0.85);
break;
default:
break;
}
return p;
beach:
AUBIO_FREE(p);
return NULL;
}
