jamie@1: /* libxtract feature extraction library
jamie@1:  *  
jamie@1:  * Copyright (C) 2006 Jamie Bullock
jamie@1:  *
jamie@1:  * This program is free software; you can redistribute it and/or modify
jamie@1:  * it under the terms of the GNU General Public License as published by
jamie@1:  * the Free Software Foundation; either version 2 of the License, or
jamie@1:  * (at your option) any later version.
jamie@1:  *
jamie@1:  * This program is distributed in the hope that it will be useful,
jamie@1:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
jamie@1:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
jamie@1:  * GNU General Public License for more details.
jamie@1:  *
jamie@1:  * You should have received a copy of the GNU General Public License
jamie@1:  * along with this program; if not, write to the Free Software
jamie@1:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
jamie@1:  * USA.
jamie@1:  */
jamie@1: 
jamie@2: /** \file xtract_delta.h: declares functions that extract a feature as a single value or vector from more than one input vector */
jamie@1: 
jamie@1: #ifndef XTRACT_DELTA
jamie@1: #define XTRACT_DELTA
jamie@1: 
jamie@1: #ifdef __cplusplus
jamie@1: extern "C" {
jamie@1: #endif
jamie@1: 
jamie@1: #include "xtract_types.h"
jamie@1: 
jamie@2: /* \brief Extract spectral flux as defined by Gaël Richard (2006)*/
jamie@1: int xtract_flux(float *data, int N, void *argv , float *result);
jamie@1: /*xtract_frame_tracker *xf */
jamie@1: 
jamie@2: /** \brief Extract attack Time */
jamie@1: int xtract_attack_time(float *data, int N, void *argv , float *result);
jamie@1: /* xtract_amp_tracker *xa */
jamie@1: 
jamie@2: /** Extract temporal decrease */
jamie@1: int xtract_decay_time(float *data, int N, void *argv, float *result);
jamie@1: /* xtract_amp_tracker *xa */
jamie@1: 
jamie@1: 
jamie@2: /** \brief A generic function to calculate the delta of a feature over a given period (in frames) */
jamie@1: int xtract_delta_feature(float *data, int N, void *argv, float *result);
jamie@1: /*xtract_frame_tracker *xf */
jamie@1: /*float frames*/
jamie@1: 
jamie@1: 
jamie@1: 
jamie@1: #ifdef __cplusplus
jamie@1: }
jamie@1: #endif
jamie@1: 
jamie@1: #endif