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 object
25 This object stores all the memory required for tempo detection algorithm
26 and returns the estimated beat locations.
28 \example tempo/test-tempo.c
39 /** tempo detection structure */
40 typedef struct _aubio_tempo_t aubio_tempo_t;
42 /** create tempo detection object */
43 aubio_tempo_t * new_aubio_tempo (char_t * method,
44 uint_t buf_size, uint_t hop_size, uint_t samplerate);
46 /** execute tempo detection */
47 void aubio_tempo_do (aubio_tempo_t *o, fvec_t * input, fvec_t * tempo);
49 /** set tempo detection silence threshold */
50 uint_t aubio_tempo_set_silence(aubio_tempo_t * o, smpl_t silence);
52 /** set tempo detection peak picking threshold */
53 uint_t aubio_tempo_set_threshold(aubio_tempo_t * o, smpl_t threshold);
57 \param bt beat tracking object
59 Returns the currently observed tempo, or 0 if no consistent value is found
62 smpl_t aubio_tempo_get_bpm(aubio_tempo_t * bt);
64 /** get current tempo confidence
66 \param bt beat tracking object
68 Returns the confidence with which the tempo has been observed, 0 if no
69 consistent value is found.
72 smpl_t aubio_tempo_get_confidence(aubio_tempo_t * bt);
74 /** delete tempo detection object */
75 void del_aubio_tempo(aubio_tempo_t * o);