/*
- Copyright (C) 2007 Amaury Hazan
+ Copyright (C) 2007-2013 Paul Brossier <piem@aubio.org>
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
+ This file is part of aubio.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
+ aubio is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ aubio is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with aubio. If not, see <http://www.gnu.org/licenses/>.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "utils.h"
+#include "parse_args.h"
-unsigned int pos = 0; /*frames%dspblocksize*/
-uint_t usepitch = 0;
-
-int aubio_process(float **input, float **output, int nframes);
-int aubio_process(float **input, float **output, int nframes) {
- unsigned int i; /*channels*/
- unsigned int j; /*frames*/
- for (j=0;j<(unsigned)nframes;j++) {
- if(usejack) {
- for (i=0;i<channels;i++) {
- /* write input to datanew */
- fvec_write_sample(ibuf, input[i][j], i, pos);
- /* put synthnew in output */
- output[i][j] = fvec_read_sample(obuf, i, pos);
- }
- }
- /*time for fft*/
- if (pos == overlap_size-1) {
- /* block loop */
-
- //compute mag spectrum
- aubio_pvoc_do (pv,ibuf, fftgrain);
-
- uint_t coef_cnt;
- uint_t n_filters=20;
- smpl_t outbuf[20];
-
- for (coef_cnt=0; coef_cnt<n_filters ; coef_cnt++)
- outbuf[coef_cnt]=0.f;
-
- //compute mfccs
- aubio_mffc_do(fftgrain->norm, nframes, mf, outbuf);
-
- for (coef_cnt=0; coef_cnt<n_filters ; coef_cnt++)
- outmsg("%f ",outbuf[coef_cnt]);
- outmsg("\n");
-
-
-
- /* end of block loop */
- pos = -1; /* so it will be zero next j loop */
- }
- pos++;
- }
- return 1;
+aubio_pvoc_t *pv; // a phase vocoder
+cvec_t *fftgrain; // outputs a spectrum
+aubio_mfcc_t * mfcc; // which the mfcc will process
+fvec_t * mfcc_out; // to get the output coefficients
+
+uint_t n_filters = 40;
+uint_t n_coefs = 13;
+
+void process_block (fvec_t *ibuf, fvec_t *obuf)
+{
+ fvec_zeros(obuf);
+ //compute mag spectrum
+ aubio_pvoc_do (pv, ibuf, fftgrain);
+ //compute mfccs
+ aubio_mfcc_do(mfcc, fftgrain, mfcc_out);
}
-void process_print (void);
-void process_print (void) {
- /* output times in seconds
- write extracted mfccs
- */
-
- if (output_filename == NULL) {
- if(frames >= 4) {
- outmsg("%f\n",(frames-4)*overlap_size/(float)samplerate);
- } else if (frames < 4) {
- outmsg("%f\n",0.);
- }
- }
+void process_print (void)
+{
+ /* output times in selected format */
+ print_time (blocks * hop_size);
+ outmsg ("\t");
+ /* output extracted mfcc */
+ fvec_print (mfcc_out);
}
int main(int argc, char **argv) {
+ int ret = 0;
+ // change some default params
+ buffer_size = 512;
+ hop_size = 256;
+
examples_common_init(argc,argv);
-
- //allocate and initialize mel filter bank
- uint_t n_filters=20;
- uint_t nyquist= samplerate / 2.;
- smpl_t lowfreq=80.f;
- smpl_t highfreq=18000.f;
-
- uint_t banksize = (uint) ( sizeof(aubio_mel_filter));
- aubio_mel_filter * mf = (aubio_mel_filter *)getbytes(banksize);
-
- mf->n_filters = 20;
- mf->filters = (smpl_t **)getbytes(mf->n_filters * sizeof(smpl_t *));
- for(n = 0; n < mf->n_filters; n++)
- mf->filters[n] = (smpl_t *)getbytes((buffer_size/2+1) * sizeof(smpl_t));
-
- //populating the filter
- aubio_mfcc_init(buffer_size, nyquist, XTRACT_EQUAL_GAIN, lowfreq, highfreq, mf->n_filters, mf->filters);
-
- //process
- examples_common_process(aubio_process,process_print);
+
+ verbmsg ("using source: %s at %dHz\n", source_uri, samplerate);
+ verbmsg ("buffer_size: %d, ", buffer_size);
+ verbmsg ("hop_size: %d\n", hop_size);
+
+ pv = new_aubio_pvoc (buffer_size, hop_size);
+ fftgrain = new_cvec (buffer_size);
+ mfcc = new_aubio_mfcc(buffer_size, n_filters, n_coefs, samplerate);
+ mfcc_out = new_fvec(n_coefs);
+ if (pv == NULL || fftgrain == NULL || mfcc == NULL || mfcc_out == NULL) {
+ ret = 1;
+ goto beach;
+ }
+
+ examples_common_process((aubio_process_func_t)process_block, process_print);
+
+ del_aubio_pvoc (pv);
+ del_cvec (fftgrain);
+ del_aubio_mfcc(mfcc);
+ del_fvec(mfcc_out);
+
+beach:
examples_common_del();
- debug("End of program.\n");
- fflush(stderr);
-
- //destroying filterbank
- free(mf);
-
- return 0;
+ return ret;
}
-
projects / aubio.git / blobdiff