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Signed-off-by: falkTX <falktx@falktx.com>
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falkTX 2022-05-01 06:57:49 +01:00
parent 0d952f80af
commit 2ae7009b0e
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48 changed files with 8937 additions and 1 deletions
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54
deps/aubio/src/temporal/biquad.c vendored Normal file
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/*
Copyright (C) 2003-2009 Paul Brossier <piem@aubio.org>
This file is part of aubio.
aubio is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
aubio is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with aubio. If not, see <http://www.gnu.org/licenses/>.
*/
#include "aubio_priv.h"
#include "fvec.h"
#include "lvec.h"
#include "temporal/filter.h"
#include "temporal/biquad.h"
uint_t
aubio_filter_set_biquad (aubio_filter_t * f, lsmp_t b0, lsmp_t b1, lsmp_t b2,
lsmp_t a1, lsmp_t a2)
{
uint_t order = aubio_filter_get_order (f);
lvec_t *bs = aubio_filter_get_feedforward (f);
lvec_t *as = aubio_filter_get_feedback (f);
if (order != 3) {
AUBIO_ERROR ("order of biquad filter must be 3, not %d\n", order);
return AUBIO_FAIL;
}
bs->data[0] = b0;
bs->data[1] = b1;
bs->data[2] = b2;
as->data[0] = 1.;
as->data[1] = a1;
as->data[2] = a2;
return AUBIO_OK;
}
aubio_filter_t *
new_aubio_filter_biquad (lsmp_t b0, lsmp_t b1, lsmp_t b2, lsmp_t a1, lsmp_t a2)
{
aubio_filter_t *f = new_aubio_filter (3);
aubio_filter_set_biquad (f, b0, b1, b2, a1, a2);
return f;
}