ref: a4c1e861f03a220d9448dac07e2b768b516f742e
dir: /src/pitch/pitchmcomb.h/
/* Copyright (C) 2003-2009 Paul Brossier <piem@aubio.org> This file is part of aubio. aubio is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. aubio is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with aubio. If not, see <http://www.gnu.org/licenses/>. */ /** \file Pitch detection using multiple-comb filter This fundamental frequency estimation algorithm implements spectral flattening, multi-comb filtering and peak histogramming. This method was designed by Juan P. Bello and described in: Juan-Pablo Bello. ``Towards the Automated Analysis of Simple Polyphonic Music''. PhD thesis, Centre for Digital Music, Queen Mary University of London, London, UK, 2003. \example pitch/test-pitchmcomb.c */ #ifndef PITCHMCOMB_H #define PITCHMCOMB_H #ifdef __cplusplus extern "C" { #endif /** pitch detection object */ typedef struct _aubio_pitchmcomb_t aubio_pitchmcomb_t; /** execute pitch detection on an input spectral frame \param p pitch detection object as returned by new_aubio_pitchmcomb \param in_fftgrain input signal spectrum as computed by aubio_pvoc_do \param out_cands pitch candidate frequenciess, in bins */ void aubio_pitchmcomb_do (aubio_pitchmcomb_t * p, cvec_t * in_fftgrain, fvec_t * out_cands); /** creation of the pitch detection object \param buf_size size of the input buffer to analyse \param hop_size step size between two consecutive analysis instant */ aubio_pitchmcomb_t *new_aubio_pitchmcomb (uint_t buf_size, uint_t hop_size); /** deletion of the pitch detection object \param p pitch detection object as returned by new_aubio_pitchfcomb */ void del_aubio_pitchmcomb (aubio_pitchmcomb_t * p); #ifdef __cplusplus } #endif #endif /* PITCHMCOMB_H */