source: src/spectral/filterbank.h @ 554e286

feature/autosinkfeature/cnnfeature/cnn_orgfeature/constantqfeature/crepefeature/crepe_orgfeature/pitchshiftfeature/pydocstringsfeature/timestretchfix/ffmpeg5pitchshiftsamplertimestretchyinfft+
Last change on this file since 554e286 was 554e286, checked in by Paul Brossier <piem@piem.org>, 14 years ago

src/spectral/filterbank.h: improve documentation

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File size: 2.2 KB
RevLine 
[88199ce]1/*
[06cae6c]2  Copyright (C) 2007-2009 Paul Brossier <piem@aubio.org>
3                      and Amaury Hazan <ahazan@iua.upf.edu>
4
[1c2e186]5  This file is part of aubio.
[06cae6c]6
[1c2e186]7  aubio is free software: you can redistribute it and/or modify
[06cae6c]8  it under the terms of the GNU General Public License as published by
9  the Free Software Foundation, either version 3 of the License, or
10  (at your option) any later version.
11
[1c2e186]12  aubio is distributed in the hope that it will be useful,
[06cae6c]13  but WITHOUT ANY WARRANTY; without even the implied warranty of
14  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  GNU General Public License for more details.
16
17  You should have received a copy of the GNU General Public License
[1c2e186]18  along with aubio.  If not, see <http://www.gnu.org/licenses/>.
[06cae6c]19
[88199ce]20*/
21
[8708556]22/** \file
23
24  Filterbank object
25
[06cae6c]26  General-purpose spectral filterbank object.
[8708556]27
28*/
29
[73eaa2e]30#ifndef FILTERBANK_H
31#define FILTERBANK_H
[88199ce]32
[7c6c806d]33#ifdef __cplusplus
[3b3b03e]34extern "C"
35{
[7c6c806d]36#endif
37
[2d8cffa]38/** filterbank object */
[e6c11e3]39typedef struct _aubio_filterbank_t aubio_filterbank_t;
[8708556]40
41/** create filterbank object
42
43  \param n_filters number of filters to create
[554e286]44  \param win_s size of analysis buffer (and length the FFT transform)
[8708556]45
46*/
[3b3b03e]47aubio_filterbank_t *new_aubio_filterbank (uint_t n_filters, uint_t win_s);
[8708556]48
[b276dee]49/** destroy filterbank object
50
[554e286]51  \param fb filterbank, as returned by new_aubio_filterbank() method
[b276dee]52
53*/
[3b3b03e]54void del_aubio_filterbank (aubio_filterbank_t * fb);
[b276dee]55
56/** compute filterbank
57
[06cae6c]58  \param fb filterbank containing     nfilt x win_s filter coefficients
59  \param in input spectrum containing chans x win_s spectrum
60  \param out output vector containing chans x nfilt output values
61
[b276dee]62*/
[3b3b03e]63void aubio_filterbank_do (aubio_filterbank_t * fb, cvec_t * in, fvec_t * out);
[7c6c806d]64
[06cae6c]65/** return a pointer to the fvec object containing all filter coefficients
66
67  \param f filterbank object to get coefficients from
[17961b0]68
69 */
[3b3b03e]70fvec_t *aubio_filterbank_get_coeffs (aubio_filterbank_t * f);
[17961b0]71
[33916b8]72/** copy filter coefficients to the filterbank
73
[554e286]74  \param f filterbank object to set coefficients
75  \param filters filter bank coefficients to copy from
[33916b8]76
77 */
78uint_t aubio_filterbank_set_coeffs (aubio_filterbank_t * f, fvec_t * filters);
79
[7c6c806d]80#ifdef __cplusplus
81}
82#endif
[88199ce]83
[3b3b03e]84#endif                          // FILTERBANK_H
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