source: examples/aubiomfcc.c @ 787f1f3

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretchpitchshiftsamplertimestretchyinfft+
Last change on this file since 787f1f3 was 787f1f3, checked in by Amaury Hazan <mahmoudax@gmail.org>, 13 years ago

merged from laptop, change debug to AUBIO_DBG in filterbank.c

  • Property mode set to 100644
File size: 3.0 KB
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1/*
2   Copyright (C) 2007 Amaury Hazan <ahazan@iua.upf.edu>
3                  and Paul Brossier <piem@piem.org>
4
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.
9
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.
14
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.
18*/
19
20#include "utils.h"
21
22/* mfcc objects */
23fvec_t * mfcc_out;
24aubio_mfcc_t * mfcc;
25
26uint_t n_filters = 40;
27uint_t n_coefs = 11;
28
29unsigned int pos = 0; /*frames%dspblocksize*/
30uint_t usepitch = 0;
31
32int aubio_process(float **input, float **output, int nframes);
33int aubio_process(float **input, float **output, int nframes) {
34  unsigned int i;       /*channels*/
35  unsigned int j;       /*frames*/
36 
37  for (j=0;j<(unsigned)nframes;j++) {
38    if(usejack) {
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);
44      }
45    }
46    /*time for fft*/
47    if (pos == overlap_size-1) {         
48      /* block loop */
49     
50      //compute mag spectrum
51      aubio_pvoc_do (pv,ibuf, fftgrain);
52     
53      //compute mfccs
54      aubio_mfcc_do(mfcc, fftgrain, mfcc_out);
55     
56      uint_t coef_cnt;
57      for (coef_cnt = 0; coef_cnt < n_coefs; coef_cnt++) {
58          outmsg("%f ",mfcc_out->data[0][coef_cnt]);
59      }
60      outmsg("\n");
61     
62      /* end of block loop */
63      pos = -1; /* so it will be zero next j loop */
64    }
65    pos++;
66  }
67  return 1;
68}
69
70void process_print (void);
71void process_print (void) {
72      /* output times in seconds
73         write extracted mfccs
74      */
75     
76      uint_t coef_cnt;
77      if (output_filename == NULL) {
78//         if(frames >= 4) {
79//           outmsg("%f\t",(frames-4)*overlap_size/(float)samplerate);
80//         }
81//         else if (frames < 4) {
82//           outmsg("%f\t",0.);
83//         }
84        //outmsg("%f ",mfcc_out->data[0][0]);
85       
86       
87      }
88}
89
90int main(int argc, char **argv) {
91  // params
92 
93  examples_common_init(argc,argv);
94  smpl_t lowfreq = 133.333f;
95  smpl_t highfreq = 44100.f;
96  mfcc_out = new_fvec(n_coefs,channels);
97 
98 
99  //populating the filter
100  mfcc = new_aubio_mfcc(buffer_size, samplerate, n_filters, n_coefs , lowfreq, highfreq, channels);
101  dump_filterbank(mfcc);
102 
103 
104  //process
105  examples_common_process(aubio_process,process_print);
106 
107  //destroying mfcc
108  del_aubio_mfcc(mfcc);
109  del_fvec(mfcc_out);
110
111  examples_common_del();
112  debug("End of program.\n");
113  fflush(stderr);
114 
115  return 0;
116}
117
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