andrew@0: /*
andrew@0: 	 Copyright (C) 2003 Paul Brossier
andrew@0: 
andrew@0: 	 This program is free software; you can redistribute it and/or modify
andrew@0: 	 it under the terms of the GNU General Public License as published by
andrew@0: 	 the Free Software Foundation; either version 2 of the License, or
andrew@0: 	 (at your option) any later version.
andrew@0: 
andrew@0: 	 This program is distributed in the hope that it will be useful,
andrew@0: 	 but WITHOUT ANY WARRANTY; without even the implied warranty of
andrew@0: 	 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
andrew@0: 	 GNU General Public License for more details.
andrew@0: 
andrew@0: 	 You should have received a copy of the GNU General Public License
andrew@0: 	 along with this program; if not, write to the Free Software
andrew@0: 	 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
andrew@0: 	 
andrew@0: */
andrew@0: 
andrew@0: /** \file
andrew@0: 
andrew@0:   Transient / Steady-state Separation (TSS)
andrew@0: 
andrew@0:   This file implement a Transient / Steady-state Separation (TSS) as described
andrew@0:   in:
andrew@0: 
andrew@0:   Christopher Duxbury, Mike E. Davies, and Mark B. Sandler. Separation of
andrew@0:   transient information in musical audio using multiresolution analysis
andrew@0:   techniques. In Proceedings of the Digital Audio Effects Conference, DAFx-01,
andrew@0:   pages 1­5, Limerick, Ireland, 2001.
andrew@0: 
andrew@0: */
andrew@0: 
andrew@0: #ifndef TSS_H
andrew@0: #define TSS_H
andrew@0: 
andrew@0: #ifdef __cplusplus
andrew@0: extern "C" {
andrew@0: #endif
andrew@0: 
andrew@0: /** TSS object */
andrew@0: typedef struct _aubio_tss_t aubio_tss_t;
andrew@0: 
andrew@0: /** create tss object
andrew@0: 
andrew@0:   \param thrs separation threshold
andrew@0:   \param alfa alfa parameter
andrew@0:   \param beta beta parameter
andrew@0:   \param size buffer size
andrew@0:   \param overlap step size
andrew@0:   \param channels number of input channels
andrew@0: 
andrew@0: */
andrew@0: aubio_tss_t * new_aubio_tss(smpl_t thrs, smpl_t alfa, smpl_t beta, 
andrew@0:     ba_uint_t size, ba_uint_t overlap,ba_uint_t channels);
andrew@0: /** delete tss object
andrew@0: 
andrew@0:   \param s tss object as returned by new_aubio_tss
andrew@0: 
andrew@0: */
andrew@0: void del_aubio_tss(aubio_tss_t *s);
andrew@0: 
andrew@0: /** set transient / steady state separation threshold 
andrew@0:  
andrew@0:   \param tss tss object as returned by new_aubio_tss
andrew@0:   \param thrs new threshold value
andrew@0: 
andrew@0: */
andrew@0: void aubio_tss_set_thres(aubio_tss_t *tss, smpl_t thrs);
andrew@0: /** split input into transient and steady states components
andrew@0:  
andrew@0:   \param s tss object as returned by new_aubio_tss
andrew@0:   \param input input spectral frame
andrew@0:   \param trans output transient components
andrew@0:   \param stead output steady state components
andrew@0: 
andrew@0: */
andrew@0: void aubio_tss_do(aubio_tss_t *s, cvec_t * input, cvec_t * trans, cvec_t * stead);
andrew@0: 
andrew@0: #ifdef __cplusplus
andrew@0: }
andrew@0: #endif
andrew@0: 
andrew@0: #endif /*TSS_H*/