2 Copyright (C) 2007 Amaury Hazan <ahazan@iua.upf.edu>
3 and Paul Brossier <piem@piem.org>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 uint_t n_filters = 40;
31 unsigned int pos = 0; /*frames%dspblocksize*/
33 static int aubio_process(smpl_t **input, smpl_t **output, int nframes) {
34 unsigned int i; /*channels*/
35 unsigned int j; /*frames*/
37 for (j=0;j<(unsigned)nframes;j++) {
39 for (i=0;i<channels;i++) {
40 /* write input to datanew */
41 fvec_write_sample(ibuf, input[i][j], i, pos);
42 /* put synthnew in output */
43 output[i][j] = fvec_read_sample(obuf, i, pos);
47 if (pos == overlap_size-1) {
50 //compute mag spectrum
51 aubio_pvoc_do (pv,ibuf, fftgrain);
54 aubio_mfcc_do(mfcc, fftgrain, mfcc_out);
56 /* end of block loop */
57 pos = -1; /* so it will be zero next j loop */
64 static void process_print (void) {
65 /* output times in seconds
70 if (output_filename == NULL) {
71 outmsg("%f\t",frames*overlap_size/(float)samplerate);
72 for (coef_cnt = 0; coef_cnt < n_coefs; coef_cnt++) {
73 outmsg("%f ", fvec_read_sample (mfcc_out, 0, coef_cnt) );
79 int main(int argc, char **argv) {
84 examples_common_init(argc,argv);
87 pv = new_aubio_pvoc (buffer_size, overlap_size, channels);
89 fftgrain = new_cvec (buffer_size, channels);
91 //populating the filter
92 mfcc = new_aubio_mfcc(buffer_size, n_filters, n_coefs, samplerate);
94 mfcc_out = new_fvec(n_coefs,channels);
97 examples_common_process(aubio_process,process_print);
102 del_aubio_mfcc(mfcc);
105 examples_common_del();
106 debug("End of program.\n");