ref: a8aaef3948a92c477f90812b688282a5e5dc2727
dir: /src/spectral/tss.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.
*/
/** \file
Transient / Steady-state Separation (TSS)
This file implement a Transient / Steady-state Separation (TSS) as described
in:
Christopher Duxbury, Mike E. Davies, and Mark B. Sandler. Separation of
transient information in musical audio using multiresolution analysis
techniques. In Proceedings of the Digital Audio Effects Conference, DAFx-01,
pages 1--5, Limerick, Ireland, 2001.
Available at http://www.csis.ul.ie/dafx01/proceedings/papers/duxbury.pdf
*/
#ifndef TSS_H
#define TSS_H
#ifdef __cplusplus
extern "C" {
#endif
/** Transient / Steady-state Separation object */
typedef struct _aubio_tss_t aubio_tss_t;
/** create tss object
\param win_s buffer size
\param hop_s step size
\param channels number of input channels
*/
aubio_tss_t *new_aubio_tss (uint_t win_s, uint_t hop_s, uint_t channels);
/** delete tss object
\param o tss object as returned by new_aubio_tss()
*/
void del_aubio_tss (aubio_tss_t * o);
/** split input into transient and steady states components
\param o tss object as returned by new_aubio_tss()
\param input input spectral frame
\param trans output transient components
\param stead output steady state components
*/
void aubio_tss_do (aubio_tss_t * o, cvec_t * input, cvec_t * trans,
cvec_t * stead);
/** set transient / steady state separation threshold
\param o tss object as returned by new_aubio_tss()
\param thrs new threshold value
*/
uint_t aubio_tss_set_threshold (aubio_tss_t * o, smpl_t thrs);
/** set parameter a, defaults to 3
\param o tss object as returned by new_aubio_tss()
\param alpha new value for alpha parameter
*/
uint_t aubio_tss_set_alpha (aubio_tss_t * o, smpl_t alpha);
/** set parameter b, defaults to 3
\param o tss object as returned by new_aubio_tss()
\param beta new value for beta parameter
*/
uint_t aubio_tss_set_beta (aubio_tss_t * o, smpl_t beta);
#ifdef __cplusplus
}
#endif
#endif /*TSS_H*/