2 Copyright (C) 2003-2009 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"
25 #include "mathutils.h"
26 #include "musicutils.h"
27 #include "spectral/phasevoc.h"
28 #include "temporal/filter.h"
29 #include "temporal/c_weighting.h"
30 #include "pitch/pitchmcomb.h"
31 #include "pitch/pitchyin.h"
32 #include "pitch/pitchfcomb.h"
33 #include "pitch/pitchschmitt.h"
34 #include "pitch/pitchyinfft.h"
35 #include "pitch/pitch.h"
37 /** pitch detection algorithm */
40 aubio_pitcht_yin, /**< YIN algorithm */
41 aubio_pitcht_mcomb, /**< Multi-comb filter */
42 aubio_pitcht_schmitt, /**< Schmitt trigger */
43 aubio_pitcht_fcomb, /**< Fast comb filter */
44 aubio_pitcht_yinfft, /**< Spectral YIN */
45 aubio_pitcht_default = aubio_pitcht_yinfft, /**< the one used when "default" is asked */
48 /** pitch detection output mode */
51 aubio_pitchm_freq, /**< Frequency (Hz) */
52 aubio_pitchm_midi, /**< MIDI note (0.,127) */
53 aubio_pitchm_cent, /**< Cent */
54 aubio_pitchm_bin, /**< Frequency bin (0,bufsize) */
55 aubio_pitchm_default = aubio_pitchm_freq, /**< the one used when "default" is asked */
58 typedef void (*aubio_pitch_func_t)
59 (aubio_pitch_t * p, fvec_t * ibuf, fvec_t * obuf);
60 typedef smpl_t (*aubio_pitch_conv_t)
61 (smpl_t value, uint_t srate, uint_t bufsize);
63 void aubio_pitch_slideblock (aubio_pitch_t * p, fvec_t * ibuf);
65 void aubio_pitch_do_mcomb (aubio_pitch_t * p, fvec_t * ibuf, fvec_t * obuf);
66 void aubio_pitch_do_yin (aubio_pitch_t * p, fvec_t * ibuf, fvec_t * obuf);
67 void aubio_pitch_do_schmitt (aubio_pitch_t * p, fvec_t * ibuf, fvec_t * obuf);
68 void aubio_pitch_do_fcomb (aubio_pitch_t * p, fvec_t * ibuf, fvec_t * obuf);
69 void aubio_pitch_do_yinfft (aubio_pitch_t * p, fvec_t * ibuf, fvec_t * obuf);
71 /** generic pitch detection structure */
74 aubio_pitch_type type; /**< pitch detection mode */
75 aubio_pitch_mode mode; /**< pitch detection output mode */
76 uint_t srate; /**< samplerate */
77 uint_t bufsize; /**< buffer size */
78 aubio_pitchmcomb_t *mcomb; /**< mcomb object */
79 aubio_pitchfcomb_t *fcomb; /**< fcomb object */
80 aubio_pitchschmitt_t *schmitt; /**< schmitt object */
81 aubio_pitchyinfft_t *yinfft; /**< yinfft object */
82 aubio_pitchyin_t *yin; /**< yinfft object */
83 aubio_filter_t *filter; /**< filter */
84 aubio_pvoc_t *pv; /**< phase vocoder for mcomb */
85 cvec_t *fftgrain; /**< spectral frame for mcomb */
86 fvec_t *buf; /**< temporary buffer for yin */
87 aubio_pitch_func_t callback; /**< pointer to current pitch detection method */
88 aubio_pitch_conv_t freqconv; /**< pointer to current pitch conversion method */
91 /* convenience wrapper function for frequency unit conversions
92 * should probably be rewritten with #defines */
93 smpl_t freqconvbin (smpl_t f, uint_t srate, uint_t bufsize);
95 freqconvbin (smpl_t f, uint_t srate, uint_t bufsize)
97 return aubio_freqtobin (f, srate, bufsize);
100 smpl_t freqconvmidi (smpl_t f, uint_t srate, uint_t bufsize);
102 freqconvmidi (smpl_t f, uint_t srate UNUSED, uint_t bufsize UNUSED)
104 return aubio_freqtomidi (f);
107 smpl_t freqconvpass (smpl_t f, uint_t srate, uint_t bufsize);
109 freqconvpass (smpl_t f, uint_t srate UNUSED, uint_t bufsize UNUSED)
115 new_aubio_pitch (char_t * pitch_mode,
116 uint_t bufsize, uint_t hopsize, uint_t samplerate)
118 aubio_pitch_t *p = AUBIO_NEW (aubio_pitch_t);
119 aubio_pitch_type pitch_type;
120 if (strcmp (pitch_mode, "mcomb") == 0)
121 pitch_type = aubio_pitcht_mcomb;
122 else if (strcmp (pitch_mode, "yinfft") == 0)
123 pitch_type = aubio_pitcht_yin;
124 else if (strcmp (pitch_mode, "yin") == 0)
125 pitch_type = aubio_pitcht_yin;
126 else if (strcmp (pitch_mode, "schmitt") == 0)
127 pitch_type = aubio_pitcht_schmitt;
128 else if (strcmp (pitch_mode, "fcomb") == 0)
129 pitch_type = aubio_pitcht_fcomb;
130 else if (strcmp (pitch_mode, "default") == 0)
131 pitch_type = aubio_pitcht_default;
133 AUBIO_ERR ("unknown pitch detection method %s, using default.\n",
135 pitch_type = aubio_pitcht_default;
137 p->srate = samplerate;
138 p->type = pitch_type;
139 aubio_pitch_set_unit (p, "default");
140 p->bufsize = bufsize;
142 case aubio_pitcht_yin:
143 p->buf = new_fvec (bufsize);
144 p->yin = new_aubio_pitchyin (bufsize);
145 p->callback = aubio_pitch_do_yin;
146 aubio_pitchyin_set_tolerance (p->yin, 0.15);
148 case aubio_pitcht_mcomb:
149 p->pv = new_aubio_pvoc (bufsize, hopsize);
150 p->fftgrain = new_cvec (bufsize);
151 p->mcomb = new_aubio_pitchmcomb (bufsize, hopsize);
152 p->filter = new_aubio_filter_c_weighting (samplerate);
153 p->callback = aubio_pitch_do_mcomb;
155 case aubio_pitcht_fcomb:
156 p->buf = new_fvec (bufsize);
157 p->fcomb = new_aubio_pitchfcomb (bufsize, hopsize);
158 p->callback = aubio_pitch_do_fcomb;
160 case aubio_pitcht_schmitt:
161 p->buf = new_fvec (bufsize);
162 p->schmitt = new_aubio_pitchschmitt (bufsize);
163 p->callback = aubio_pitch_do_schmitt;
165 case aubio_pitcht_yinfft:
166 p->buf = new_fvec (bufsize);
167 p->yinfft = new_aubio_pitchyinfft (bufsize);
168 p->callback = aubio_pitch_do_yinfft;
169 aubio_pitchyinfft_set_tolerance (p->yinfft, 0.85);
178 del_aubio_pitch (aubio_pitch_t * p)
181 case aubio_pitcht_yin:
183 del_aubio_pitchyin (p->yin);
185 case aubio_pitcht_mcomb:
186 del_aubio_pvoc (p->pv);
187 del_cvec (p->fftgrain);
188 del_aubio_filter (p->filter);
189 del_aubio_pitchmcomb (p->mcomb);
191 case aubio_pitcht_schmitt:
193 del_aubio_pitchschmitt (p->schmitt);
195 case aubio_pitcht_fcomb:
197 del_aubio_pitchfcomb (p->fcomb);
199 case aubio_pitcht_yinfft:
201 del_aubio_pitchyinfft (p->yinfft);
210 aubio_pitch_slideblock (aubio_pitch_t * p, fvec_t * ibuf)
212 uint_t j = 0, overlap_size = 0;
213 overlap_size = p->buf->length - ibuf->length;
214 for (j = 0; j < overlap_size; j++) {
215 p->buf->data[j] = p->buf->data[j + ibuf->length];
217 for (j = 0; j < ibuf->length; j++) {
218 p->buf->data[j + overlap_size] = ibuf->data[j];
223 aubio_pitch_set_unit (aubio_pitch_t * p, char_t * pitch_unit)
225 aubio_pitch_mode pitch_mode;
226 if (strcmp (pitch_unit, "freq") == 0)
227 pitch_mode = aubio_pitchm_freq;
228 else if (strcmp (pitch_unit, "midi") == 0)
229 pitch_mode = aubio_pitchm_midi;
230 else if (strcmp (pitch_unit, "cent") == 0)
231 pitch_mode = aubio_pitchm_cent;
232 else if (strcmp (pitch_unit, "bin") == 0)
233 pitch_mode = aubio_pitchm_bin;
234 else if (strcmp (pitch_unit, "default") == 0)
235 pitch_mode = aubio_pitchm_default;
237 AUBIO_ERR ("unknown pitch detection unit %s, using default\n", pitch_unit);
238 pitch_mode = aubio_pitchm_default;
240 p->mode = pitch_mode;
242 case aubio_pitchm_freq:
243 p->freqconv = freqconvpass;
245 case aubio_pitchm_midi:
246 p->freqconv = freqconvmidi;
248 case aubio_pitchm_cent:
249 /* bug: not implemented */
250 p->freqconv = freqconvmidi;
252 case aubio_pitchm_bin:
253 p->freqconv = freqconvbin;
262 aubio_pitch_set_tolerance (aubio_pitch_t * p, smpl_t tol)
265 case aubio_pitcht_yin:
266 aubio_pitchyin_set_tolerance (p->yin, tol);
268 case aubio_pitcht_yinfft:
269 aubio_pitchyinfft_set_tolerance (p->yinfft, tol);
278 aubio_pitch_do (aubio_pitch_t * p, fvec_t * ibuf, fvec_t * obuf)
280 p->callback (p, ibuf, obuf);
281 obuf->data[0] = p->freqconv (obuf->data[0], p->srate, p->bufsize);
285 aubio_pitch_do_mcomb (aubio_pitch_t * p, fvec_t * ibuf, fvec_t * obuf)
287 aubio_filter_do (p->filter, ibuf);
288 aubio_pvoc_do (p->pv, ibuf, p->fftgrain);
289 aubio_pitchmcomb_do (p->mcomb, p->fftgrain, obuf);
290 obuf->data[0] = aubio_bintofreq (obuf->data[0], p->srate, p->bufsize);
294 aubio_pitch_do_yin (aubio_pitch_t * p, fvec_t * ibuf, fvec_t * obuf)
297 aubio_pitch_slideblock (p, ibuf);
298 aubio_pitchyin_do (p->yin, p->buf, obuf);
299 pitch = obuf->data[0];
301 pitch = p->srate / (pitch + 0.);
305 obuf->data[0] = pitch;
310 aubio_pitch_do_yinfft (aubio_pitch_t * p, fvec_t * ibuf, fvec_t * obuf)
313 aubio_pitch_slideblock (p, ibuf);
314 aubio_pitchyinfft_do (p->yinfft, p->buf, obuf);
315 pitch = obuf->data[0];
317 pitch = p->srate / (pitch + 0.);
321 obuf->data[0] = pitch;
325 aubio_pitch_do_fcomb (aubio_pitch_t * p, fvec_t * ibuf, fvec_t * out)
327 aubio_pitch_slideblock (p, ibuf);
328 aubio_pitchfcomb_do (p->fcomb, p->buf, out);
329 out->data[0] = aubio_bintofreq (out->data[0], p->srate, p->bufsize);
333 aubio_pitch_do_schmitt (aubio_pitch_t * p, fvec_t * ibuf, fvec_t * out)
335 smpl_t period, pitch = 0.;
336 aubio_pitch_slideblock (p, ibuf);
337 aubio_pitchschmitt_do (p->schmitt, p->buf, out);
338 period = out->data[0];
340 pitch = p->srate / period;
344 out->data[0] = pitch;