ref: 0536612b984ce2c8b8a40764dec0e670e5235230
dir: /src/pitch/pitch.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/>. */ #ifndef PITCH_H #define PITCH_H #ifdef __cplusplus extern "C" { #endif /** \file Generic method for pitch detection This file creates the objects required for the computation of the selected pitch detection algorithm and output the results, in midi note or Hz. */ /** pitch detection object */ typedef struct _aubio_pitch_t aubio_pitch_t; /** execute pitch detection on an input signal frame \param o pitch detection object as returned by new_aubio_pitch() \param in input signal of size [hop_size x channels] \param out output pitch candidates of size [1 x channels] */ void aubio_pitch_do (aubio_pitch_t * o, fvec_t * in, fvec_t * out); /** change yin or yinfft tolerance threshold \param o pitch detection object as returned by new_aubio_pitch() \param tol tolerance default is 0.15 for yin and 0.85 for yinfft */ uint_t aubio_pitch_set_tolerance (aubio_pitch_t * o, smpl_t tol); /** deletion of the pitch detection object \param o pitch detection object as returned by new_aubio_pitch() */ void del_aubio_pitch (aubio_pitch_t * o); /** creation of the pitch detection object \param method set pitch detection algorithm \param buf_size size of the input buffer to analyse \param hop_size step size between two consecutive analysis instant \param channels number of channels to analyse \param samplerate sampling rate of the signal */ aubio_pitch_t *new_aubio_pitch (char_t * method, uint_t buf_size, uint_t hop_size, uint_t channels, uint_t samplerate); /** set the output unit of the pitch detection object \param o pitch detection object as returned by new_aubio_pitch() \param mode set pitch units for output */ uint_t aubio_pitch_set_unit (aubio_pitch_t * o, char_t * mode); #ifdef __cplusplus } #endif #endif /*PITCH_H*/