2 Copyright (C) 2007-2013 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/>.
22 #include "parse_args.h"
24 aubio_pvoc_t *pv; // a phase vocoder
25 cvec_t *fftgrain; // outputs a spectrum
26 aubio_mfcc_t * mfcc; // which the mfcc will process
27 fvec_t * mfcc_out; // to get the output coefficients
29 uint_t n_filters = 40;
33 process_block(fvec_t *ibuf, fvec_t *obuf) {
35 //compute mag spectrum
36 aubio_pvoc_do (pv, ibuf, fftgrain);
38 aubio_mfcc_do(mfcc, fftgrain, mfcc_out);
41 static void process_print (void) {
42 /* output times in seconds and extracted mfccs */
43 outmsg("%f\t",blocks*hop_size/(float)samplerate);
47 int main(int argc, char **argv) {
48 // change some default params
52 examples_common_init(argc,argv);
54 verbmsg ("using source: %s at %dHz\n", source_uri, samplerate);
55 verbmsg ("buffer_size: %d, ", buffer_size);
56 verbmsg ("hop_size: %d\n", hop_size);
58 pv = new_aubio_pvoc (buffer_size, hop_size);
59 fftgrain = new_cvec (buffer_size);
60 mfcc = new_aubio_mfcc(buffer_size, n_filters, n_coefs, samplerate);
61 mfcc_out = new_fvec(n_coefs);
63 examples_common_process((aubio_process_func_t)process_block, process_print);
70 examples_common_del();