ref: 67d0a8b307fe41cb426584a57a6bb0804dd1373c
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*/