source: examples/aubiomfcc.c @ 2f965e2

feature/autosinkfeature/cnnfeature/cnn_orgfeature/constantqfeature/crepefeature/crepe_orgfeature/pitchshiftfeature/pydocstringsfeature/timestretchfix/ffmpeg5pitchshiftsamplertimestretchyinfft+
Last change on this file since 2f965e2 was 340cb93, checked in by Paul Brossier <piem@piem.org>, 9 years ago

examples/: add time format option

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File size: 2.0 KB
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1/*
2  Copyright (C) 2007-2013 Paul Brossier <piem@aubio.org>
3
4  This file is part of aubio.
5
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.
10
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.
15
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/>.
18
19*/
20
21#include "utils.h"
22#include "parse_args.h"
23
24aubio_pvoc_t *pv;    // a phase vocoder
25cvec_t *fftgrain;    // outputs a spectrum
26aubio_mfcc_t * mfcc; // which the mfcc will process
27fvec_t * mfcc_out;   // to get the output coefficients
28
29uint_t n_filters = 40;
30uint_t n_coefs = 13;
31
32void process_block (fvec_t *ibuf, fvec_t *obuf)
33{
34  fvec_zeros(obuf);
35  //compute mag spectrum
36  aubio_pvoc_do (pv, ibuf, fftgrain);
37  //compute mfccs
38  aubio_mfcc_do(mfcc, fftgrain, mfcc_out);
39}
40
41void process_print (void)
42{
43  /* output times in selected format */
44  print_time (blocks * hop_size);
45  outmsg ("\t");
46  /* output extracted mfcc */
47  fvec_print (mfcc_out);
48}
49
50int main(int argc, char **argv) {
51  // change some default params
52  buffer_size  = 512;
53  hop_size = 256;
54
55  examples_common_init(argc,argv);
56
57  verbmsg ("using source: %s at %dHz\n", source_uri, samplerate);
58  verbmsg ("buffer_size: %d, ", buffer_size);
59  verbmsg ("hop_size: %d\n", hop_size);
60
61  pv = new_aubio_pvoc (buffer_size, hop_size);
62  fftgrain = new_cvec (buffer_size);
63  mfcc = new_aubio_mfcc(buffer_size, n_filters, n_coefs, samplerate);
64  mfcc_out = new_fvec(n_coefs);
65
66  examples_common_process((aubio_process_func_t)process_block, process_print);
67
68  del_aubio_pvoc (pv);
69  del_cvec (fftgrain);
70  del_aubio_mfcc(mfcc);
71  del_fvec(mfcc_out);
72
73  examples_common_del();
74  return 0;
75}
76
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