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1 /*
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2 Copyright (C) 2003 Paul Brossier
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3
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4 This program is free software; you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 2 of the License, or
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7 (at your option) any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License
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15 along with this program; if not, write to the Free Software
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16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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17
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18 */
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19
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20 /** \file
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21
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22 Transient / Steady-state Separation (TSS)
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23
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24 This file implement a Transient / Steady-state Separation (TSS) as described
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25 in:
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26
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27 Christopher Duxbury, Mike E. Davies, and Mark B. Sandler. Separation of
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28 transient information in musical audio using multiresolution analysis
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29 techniques. In Proceedings of the Digital Audio Effects Conference, DAFx-01,
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30 pages 15, Limerick, Ireland, 2001.
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31
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32 */
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33
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34 #ifndef TSS_H
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35 #define TSS_H
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36
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37 #ifdef __cplusplus
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38 extern "C" {
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39 #endif
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40
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41 /** TSS object */
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42 typedef struct _aubio_tss_t aubio_tss_t;
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43
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44 /** create tss object
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45
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46 \param thrs separation threshold
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47 \param alfa alfa parameter
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48 \param beta beta parameter
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49 \param size buffer size
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50 \param overlap step size
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51 \param channels number of input channels
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52
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53 */
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54 aubio_tss_t * new_aubio_tss(smpl_t thrs, smpl_t alfa, smpl_t beta,
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55 ba_uint_t size, ba_uint_t overlap,ba_uint_t channels);
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56 /** delete tss object
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57
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58 \param s tss object as returned by new_aubio_tss
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59
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60 */
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61 void del_aubio_tss(aubio_tss_t *s);
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62
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63 /** set transient / steady state separation threshold
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64
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65 \param tss tss object as returned by new_aubio_tss
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66 \param thrs new threshold value
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67
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68 */
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69 void aubio_tss_set_thres(aubio_tss_t *tss, smpl_t thrs);
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70 /** split input into transient and steady states components
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71
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72 \param s tss object as returned by new_aubio_tss
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73 \param input input spectral frame
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74 \param trans output transient components
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75 \param stead output steady state components
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76
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77 */
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78 void aubio_tss_do(aubio_tss_t *s, cvec_t * input, cvec_t * trans, cvec_t * stead);
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79
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80 #ifdef __cplusplus
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81 }
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82 #endif
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83
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84 #endif /*TSS_H*/
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