ref: 88199cee9bb703d33e28636e043109db53681ccb
dir: /src/aubiofilterbank.h/
/*
Copyright (C) 2007 Amaury Hazan
Ported to aubio from LibXtract
http://libxtract.sourceforge.net/
This program 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 2 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef AUBIOFILTERBANK_H
#include AUBIOFILTERBANK_H
#define NYQUIST 22050.f
// Struct Declaration
/** \brief A structure to store a set of n_filters Mel filters */
typedef struct aubio_mel_filter_ {
int n_filters;
float **filters;
} aubio_mel_filter;
// Initialization
/** \brief A function to initialise a mel filter bank
*
* It is up to the caller to pass in a pointer to memory allocated for freq_bands arrays of length N. This function populates these arrays with magnitude coefficients representing the mel filterbank on a linear scale
*/
int aubio_mfcc_init(int N, float nyquist, int style, float freq_min, float freq_max, int freq_bands, float **fft_tables);
#endif