int main (void)
{
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_a_weighting (samplerate);
del_aubio_filter (f);
f = new_aubio_filter (7);
aubio_filter_set_a_weighting (f, samplerate);
del_aubio_filter (f);
}
// samplerate unknown
f = new_aubio_filter_a_weighting (4200);
del_aubio_filter (f);
// order to small
f = new_aubio_filter (2);
aubio_filter_set_a_weighting (f, samplerate);
del_aubio_filter (f);
// order to big
f = new_aubio_filter (12);
aubio_filter_set_a_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;
}
int main ()
{
uint_t win_s = 64; // window size
// create biquad filter with `b0`, `b1`, `b2`, `a1`, `a2`
aubio_filter_t * o = new_aubio_filter_biquad(0.3,0.2,0.1,0.2,0.3);
fvec_t * in_vec = new_fvec (win_s); // input buffer
fvec_t * tmp_vec = new_fvec (win_s); // temporary buffer
fvec_t * out_vec = new_fvec (win_s); // output buffer
uint_t times = 100;
while ( times-- ) {
// copy to out, then filter out
aubio_filter_do_outplace(o, in_vec, out_vec);
// in-place filtering
aubio_filter_do(o, in_vec);
// in-place filtering
aubio_filter_do_filtfilt(o, in_vec, out_vec);
fvec_print(in_vec);
}
// memory clean-up, one for each new
del_aubio_filter(o);
del_fvec(in_vec);
del_fvec(tmp_vec);
del_fvec(out_vec);
return 0;
}
void
del_aubio_pitch (aubio_pitch_t * p)
{
switch (p->type) {
case aubio_pitcht_yin:
del_fvec (p->buf);
del_aubio_pitchyin (p->p_object);
break;
case aubio_pitcht_mcomb:
del_aubio_pvoc (p->pv);
del_cvec (p->fftgrain);
del_aubio_filter (p->filter);
del_aubio_pitchmcomb (p->p_object);
break;
case aubio_pitcht_schmitt:
del_fvec (p->buf);
del_aubio_pitchschmitt (p->p_object);
break;
case aubio_pitcht_fcomb:
del_fvec (p->buf);
del_aubio_pitchfcomb (p->p_object);
break;
case aubio_pitcht_yinfft:
del_fvec (p->buf);
del_aubio_pitchyinfft (p->p_object);
break;
case aubio_pitcht_specacf:
del_fvec (p->buf);
del_aubio_pitchspecacf (p->p_object);
break;
default:
break;
}
AUBIO_FREE (p);
}
aubio_filter_t * new_aubio_filter_c_weighting (uint_t samplerate) {
aubio_filter_t * f = new_aubio_filter(5);
if (aubio_filter_set_c_weighting(f,samplerate) != AUBIO_OK) {
del_aubio_filter(f);
return NULL;
}
return f;
}
static void
Py_filter_del (Py_filter * self)
{
del_aubio_filter (self->o);
Py_TYPE(self)->tp_free ((PyObject *) self);
}
static void
Py_filter_del (Py_filter * self)
{
del_aubio_filter (self->o);
self->ob_type->tp_free ((PyObject *) self);
}
