ref: 660c1d824f10572727d987d7c3e166e286c6749e
dir: /src/filter.h/
/*
Copyright (C) 2003 Paul Brossier
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 FILTER_H
#define FILTER_H
/** \file
* filter
*
* \f$ y[n] = b_1 x[n] + ... + b_{order} x[n-order] -
* a_2 y[n-1] - ... - a_{order} y[n-order]\f$
*/
#ifdef __cplusplus
extern "C" {
#endif
typedef struct _aubio_filter_t aubio_filter_t;
void aubio_filter_do(aubio_filter_t * b, fvec_t * in);
void aubio_filter_do_outplace(aubio_filter_t * b, fvec_t * in, fvec_t * out);
void aubio_filter_do_filtfilt(aubio_filter_t * b, fvec_t * in, fvec_t * tmp);
aubio_filter_t * new_aubio_filter(uint_t samplerate, uint_t order);
aubio_filter_t * new_aubio_adsgn_filter(uint_t samplerate);
aubio_filter_t * new_aubio_cdsgn_filter(uint_t samplerate);
#ifdef __cplusplus
}
#endif
#endif /*FILTER_H*/