2 Copyright (C) 2006-2009 Paul Brossier <piem@aubio.org>
4 This file is part of aubio.
6 aubio is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 aubio is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with aubio. If not, see <http://www.gnu.org/licenses/>.
23 Tempo detection driver
25 This object stores all the memory required for tempo detection algorithm
26 and returns the estimated beat locations.
37 /** tempo detection structure */
38 typedef struct _aubio_tempo_t aubio_tempo_t;
40 /** create tempo detection object */
41 aubio_tempo_t * new_aubio_tempo (char_t * mode,
42 uint_t buf_size, uint_t hop_size, uint_t channels, uint_t samplerate);
44 /** execute tempo detection */
45 void aubio_tempo_do (aubio_tempo_t *o, fvec_t * input, fvec_t * tempo);
47 /** set tempo detection silence threshold */
48 uint_t aubio_tempo_set_silence(aubio_tempo_t * o, smpl_t silence);
50 /** set tempo detection peak picking threshold */
51 uint_t aubio_tempo_set_threshold(aubio_tempo_t * o, smpl_t threshold);
55 \param bt beat tracking object
57 Returns the currently observed tempo, or 0 if no consistent value is found
60 smpl_t aubio_tempo_get_bpm(aubio_tempo_t * bt);
62 /** get current tempo confidence
64 \param bt beat tracking object
66 Returns the confidence with which the tempo has been observed, 0 if no
67 consistent value is found.
70 smpl_t aubio_tempo_get_confidence(aubio_tempo_t * bt);
72 /** delete tempo detection object */
73 void del_aubio_tempo(aubio_tempo_t * o);