ref: f7b05d4f2431cb41112fd2c497acd49e918707d7
dir: /src/spectral/mfcc.h/
/* Copyright (C) 2007-2009 Paul Brossier <piem@aubio.org> and Amaury Hazan <ahazan@iua.upf.edu> 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 Mel-frequency cepstrum coefficients object */ #ifndef MFCC_H #define MFCC_H #ifdef __cplusplus extern "C" { #endif /** mfcc object */ typedef struct _aubio_mfcc_t aubio_mfcc_t; /** create mfcc object \param buf_size size of analysis buffer (and length the FFT transform) \param samplerate audio sampling rate \param n_coeffs number of desired coefficients \param n_filters number of desired filters */ aubio_mfcc_t *new_aubio_mfcc (uint_t buf_size, uint_t n_filters, uint_t n_coeffs, uint_t samplerate); /** delete mfcc object \param mf mfcc object as returned by new_aubio_mfcc */ void del_aubio_mfcc (aubio_mfcc_t * mf); /** mfcc object processing \param mf mfcc object as returned by new_aubio_mfcc \param in input spectrum (buf_size long) \param out output mel coefficients buffer (n_coeffs long) */ void aubio_mfcc_do (aubio_mfcc_t * mf, cvec_t * in, fvec_t * out); #ifdef __cplusplus } #endif #endif // MFCC_H