source: src/filter.h @ 96fb8ad

feature/autosinkfeature/cnnfeature/cnn_orgfeature/constantqfeature/crepefeature/crepe_orgfeature/pitchshiftfeature/pydocstringsfeature/timestretchfix/ffmpeg5pitchshiftsamplertimestretchyinfft+
Last change on this file since 96fb8ad was 96fb8ad, checked in by Paul Brossier <piem@altern.org>, 19 years ago

import 0.1.7.1

  • Property mode set to 100644
File size: 1.4 KB
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1/*
2         Copyright (C) 2003 Paul Brossier
3
4         This program is free software; you can redistribute it and/or modify
5         it under the terms of the GNU General Public License as published by
6         the Free Software Foundation; either version 2 of the License, or
7         (at your option) any later version.
8
9         This program is distributed in the hope that it will be useful,
10         but WITHOUT ANY WARRANTY; without even the implied warranty of
11         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12         GNU General Public License for more details.
13
14         You should have received a copy of the GNU General Public License
15         along with this program; if not, write to the Free Software
16         Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17
18*/
19
20#ifndef FILTER_H
21#define FILTER_H
22
23/** \file
24 * filter
25 *
26 * \f$ y[n] = b_1 x[n] + ... + b_{order} x[n-order] -
27 *      a_2 y[n-1] - ... - a_{order} y[n-order]\f$
28 */
29
30#ifdef __cplusplus
31extern "C" {
32#endif
33
34typedef struct _aubio_filter_t aubio_filter_t;
35void aubio_filter_do(aubio_filter_t * b, fvec_t * in);
36void aubio_filter_do_outplace(aubio_filter_t * b, fvec_t * in, fvec_t * out);
37void aubio_filter_do_filtfilt(aubio_filter_t * b, fvec_t * in, fvec_t * tmp);
38aubio_filter_t * new_aubio_filter(uint_t samplerate, uint_t order);
39aubio_filter_t * new_aubio_adsgn_filter(uint_t samplerate);
40aubio_filter_t * new_aubio_cdsgn_filter(uint_t samplerate);
41
42#ifdef __cplusplus
43}
44#endif
45
46#endif /*FILTER_H*/
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