2 Copyright (C) 2006-2013 Paul Brossier <piem@aubio.org>
4 This file is part of aubio.
6 aubio is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 aubio is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with aubio. If not, see <http://www.gnu.org/licenses/>.
21 #include "aubio_priv.h"
24 #include "spectral/specdesc.h"
25 #include "spectral/phasevoc.h"
26 #include "spectral/awhitening.h"
27 #include "onset/peakpicker.h"
28 #include "mathutils.h"
29 #include "onset/onset.h"
31 void aubio_onset_default_parameters (aubio_onset_t *o, char_t * method);
33 /** structure to store object state */
34 struct _aubio_onset_t {
35 aubio_pvoc_t * pv; /**< phase vocoder */
36 aubio_specdesc_t * od; /**< spectral descriptor */
37 aubio_peakpicker_t * pp; /**< peak picker */
38 cvec_t * fftgrain; /**< phase vocoder output */
39 fvec_t * desc; /**< spectral description */
40 smpl_t silence; /**< silence threhsold */
41 uint_t minioi; /**< minimum inter onset interval */
42 uint_t delay; /**< constant delay, in samples, removed from detected onset times */
43 uint_t samplerate; /**< sampling rate of the input signal */
44 uint_t hop_size; /**< number of samples between two runs */
46 uint_t total_frames; /**< total number of frames processed since the beginning */
47 uint_t last_onset; /**< last detected onset location, in frames */
49 uint_t apply_adaptive_whitening;
50 aubio_spectral_whitening_t *spectral_whitening;
53 /* execute onset detection function on iput buffer */
54 void aubio_onset_do (aubio_onset_t *o, fvec_t * input, fvec_t * onset)
57 aubio_pvoc_do (o->pv,input, o->fftgrain);
59 if (apply_filtering) {
61 if (apply_compression) {
64 if (o->apply_adaptive_whitening) {
65 aubio_spectral_whitening_do(o->spectral_whitening, o->fftgrain);
67 aubio_specdesc_do (o->od, o->fftgrain, o->desc);
68 aubio_peakpicker_do(o->pp, o->desc, onset);
69 isonset = onset->data[0];
71 if (aubio_silence_detection(input, o->silence)==1) {
72 //AUBIO_DBG ("silent onset, not marking as onset\n");
75 uint_t new_onset = o->total_frames + (uint_t)ROUND(isonset * o->hop_size);
76 if (o->last_onset + o->minioi < new_onset) {
77 //AUBIO_DBG ("accepted detection, marking as onset\n");
78 o->last_onset = new_onset;
80 //AUBIO_DBG ("doubled onset, not marking as onset\n");
85 // we are at the beginning of the file
86 if (o->total_frames <= o->delay) {
87 // and we don't find silence
88 if (aubio_silence_detection(input, o->silence) == 0) {
89 uint_t new_onset = o->total_frames;
90 if (o->total_frames == 0 || o->last_onset + o->minioi < new_onset) {
91 isonset = o->delay / o->hop_size;
92 o->last_onset = o->total_frames + o->delay;
97 onset->data[0] = isonset;
98 o->total_frames += o->hop_size;
102 uint_t aubio_onset_get_last (aubio_onset_t *o)
104 return o->last_onset - o->delay;
107 smpl_t aubio_onset_get_last_s (aubio_onset_t *o)
109 return aubio_onset_get_last (o) / (smpl_t) (o->samplerate);
112 smpl_t aubio_onset_get_last_ms (aubio_onset_t *o)
114 return aubio_onset_get_last_s (o) * 1000.;
117 uint_t aubio_onset_set_adaptive_whitening (aubio_onset_t *o, uint_t apply_adaptive_whitening)
119 o->apply_adaptive_whitening = apply_adaptive_whitening;
123 uint_t aubio_onset_get_adaptive_whitening (aubio_onset_t *o)
125 return o->apply_adaptive_whitening;
128 uint_t aubio_onset_set_silence(aubio_onset_t * o, smpl_t silence) {
129 o->silence = silence;
133 smpl_t aubio_onset_get_silence(aubio_onset_t * o) {
137 uint_t aubio_onset_set_threshold(aubio_onset_t * o, smpl_t threshold) {
138 aubio_peakpicker_set_threshold(o->pp, threshold);
142 smpl_t aubio_onset_get_threshold(aubio_onset_t * o) {
143 return aubio_peakpicker_get_threshold(o->pp);
146 uint_t aubio_onset_set_minioi(aubio_onset_t * o, uint_t minioi) {
151 uint_t aubio_onset_get_minioi(aubio_onset_t * o) {
155 uint_t aubio_onset_set_minioi_s(aubio_onset_t * o, smpl_t minioi) {
156 return aubio_onset_set_minioi (o, minioi * o->samplerate);
159 smpl_t aubio_onset_get_minioi_s(aubio_onset_t * o) {
160 return aubio_onset_get_minioi (o) / (smpl_t) o->samplerate;
163 uint_t aubio_onset_set_minioi_ms(aubio_onset_t * o, smpl_t minioi) {
164 return aubio_onset_set_minioi_s (o, minioi / 1000.);
167 smpl_t aubio_onset_get_minioi_ms(aubio_onset_t * o) {
168 return aubio_onset_get_minioi_s (o) * 1000.;
171 uint_t aubio_onset_set_delay(aubio_onset_t * o, uint_t delay) {
176 uint_t aubio_onset_get_delay(aubio_onset_t * o) {
180 uint_t aubio_onset_set_delay_s(aubio_onset_t * o, smpl_t delay) {
181 return aubio_onset_set_delay (o, delay * o->samplerate);
184 smpl_t aubio_onset_get_delay_s(aubio_onset_t * o) {
185 return aubio_onset_get_delay (o) / (smpl_t) o->samplerate;
188 uint_t aubio_onset_set_delay_ms(aubio_onset_t * o, smpl_t delay) {
189 return aubio_onset_set_delay_s (o, delay / 1000.);
192 smpl_t aubio_onset_get_delay_ms(aubio_onset_t * o) {
193 return aubio_onset_get_delay_s (o) * 1000.;
196 smpl_t aubio_onset_get_descriptor(aubio_onset_t * o) {
197 return o->desc->data[0];
200 smpl_t aubio_onset_get_thresholded_descriptor(aubio_onset_t * o) {
201 fvec_t * thresholded = aubio_peakpicker_get_thresholded_input(o->pp);
202 return thresholded->data[0];
205 /* Allocate memory for an onset detection */
206 aubio_onset_t * new_aubio_onset (char_t * onset_mode,
207 uint_t buf_size, uint_t hop_size, uint_t samplerate)
209 aubio_onset_t * o = AUBIO_NEW(aubio_onset_t);
211 /* check parameters are valid */
212 if ((sint_t)hop_size < 1) {
213 AUBIO_ERR("onset: got hop_size %d, but can not be < 1\n", hop_size);
215 } else if ((sint_t)buf_size < 1) {
216 AUBIO_ERR("onset: got buffer_size %d, but can not be < 1\n", buf_size);
218 } else if (buf_size < hop_size) {
219 AUBIO_ERR("onset: hop size (%d) is larger than win size (%d)\n", buf_size, hop_size);
221 } else if ((sint_t)samplerate < 1) {
222 AUBIO_ERR("onset: samplerate (%d) can not be < 1\n", samplerate);
226 /* store creation parameters */
227 o->samplerate = samplerate;
228 o->hop_size = hop_size;
230 /* allocate memory */
231 o->pv = new_aubio_pvoc(buf_size, o->hop_size);
232 o->pp = new_aubio_peakpicker();
233 o->od = new_aubio_specdesc(onset_mode,buf_size);
234 o->fftgrain = new_cvec(buf_size);
235 o->desc = new_fvec(1);
237 o->spectral_whitening = new_aubio_spectral_whitening(buf_size, hop_size, samplerate);
239 aubio_onset_default_parameters (o, onset_mode);
241 /* initialize internal variables */
251 void aubio_onset_default_parameters (aubio_onset_t * o, char_t * onset_mode)
253 /* set some default parameter */
254 aubio_onset_set_threshold (o, 0.3);
255 aubio_onset_set_delay (o, 4.3 * o->hop_size);
256 aubio_onset_set_minioi_ms (o, 50.);
257 aubio_onset_set_silence (o, -70.);
258 aubio_onset_set_adaptive_whitening (o, 1);
260 /* method specific optimisations */
261 if (strcmp (onset_mode, "energy") == 0) {
262 } else if (strcmp (onset_mode, "hfc") == 0) {
263 aubio_onset_set_adaptive_whitening (o, 0);
264 } else if (strcmp (onset_mode, "complexdomain") == 0
265 || strcmp (onset_mode, "complex") == 0) {
266 aubio_onset_set_delay (o, 4.6 * o->hop_size);
267 aubio_onset_set_threshold (o, 0.15);
268 } else if (strcmp (onset_mode, "phase") == 0) {
269 aubio_onset_set_adaptive_whitening (o, 0);
270 } else if (strcmp (onset_mode, "mkl") == 0) {
271 aubio_onset_set_threshold (o, 0.05);
272 } else if (strcmp (onset_mode, "kl") == 0) {
273 aubio_onset_set_threshold (o, 0.35);
274 } else if (strcmp (onset_mode, "specflux") == 0) {
275 aubio_onset_set_threshold (o, 0.4);
276 } else if (strcmp (onset_mode, "specdiff") == 0) {
277 } else if (strcmp (onset_mode, "default") == 0) {
279 AUBIO_ERR ("onset: unknown spectral descriptor type %s, "
280 "using default parameters.\n", onset_mode);
284 void del_aubio_onset (aubio_onset_t *o)
286 del_aubio_spectral_whitening(o->spectral_whitening);
287 del_aubio_specdesc(o->od);
288 del_aubio_peakpicker(o->pp);
289 del_aubio_pvoc(o->pv);
291 del_cvec(o->fftgrain);