2 Copyright (C) 2003-2009 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 Pitch detection using multiple-comb filter
25 This fundamental frequency estimation algorithm implements spectral
26 flattening, multi-comb filtering and peak histogramming.
28 This method was designed by Juan P. Bello and described in:
30 Juan-Pablo Bello. ``Towards the Automated Analysis of Simple Polyphonic
31 Music''. PhD thesis, Centre for Digital Music, Queen Mary University of
32 London, London, UK, 2003.
34 \example pitch/test-pitchmcomb.c
45 /** pitch detection object */
46 typedef struct _aubio_pitchmcomb_t aubio_pitchmcomb_t;
48 /** execute pitch detection on an input spectral frame
50 \param p pitch detection object as returned by new_aubio_pitchmcomb
51 \param in_fftgrain input signal spectrum as computed by aubio_pvoc_do
52 \param out_cands pitch candidate frequenciess, in bins
55 void aubio_pitchmcomb_do (aubio_pitchmcomb_t * p, cvec_t * in_fftgrain,
58 /** creation of the pitch detection object
60 \param buf_size size of the input buffer to analyse
61 \param hop_size step size between two consecutive analysis instant
64 aubio_pitchmcomb_t *new_aubio_pitchmcomb (uint_t buf_size, uint_t hop_size);
66 /** deletion of the pitch detection object
68 \param p pitch detection object as returned by new_aubio_pitchfcomb
71 void del_aubio_pitchmcomb (aubio_pitchmcomb_t * p);
77 #endif /* PITCHMCOMB_H */