temporal/adesign.h \
temporal/cdesign.h \
spectral/filterbank.h \
+ spectral/filterbank_mel.h \
spectral/mfcc.h \
spectral/phasevoc.h \
spectral/fft.h \
temporal/adesign.c \
temporal/cdesign.c \
spectral/filterbank.c \
+ spectral/filterbank_mel.c \
spectral/mfcc.c \
spectral/phasevoc.c \
spectral/fft.c \
#include "temporal/adesign.h"
#include "temporal/cdesign.h"
#include "spectral/filterbank.h"
+#include "spectral/filterbank_mel.h"
#include "spectral/mfcc.h"
#include "spectral/fft.h"
#include "spectral/phasevoc.h"
/*
- Copyright (C) 2007 Amaury Hazan <ahazan@iua.upf.edu>
- and Paul Brossier <piem@piem.org>
+ Copyright (C) 2007-2009 Paul Brossier <piem@aubio.org>
+ and Amaury Hazan <ahazan@iua.upf.edu>
- 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.
- 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.
+ 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/>.
+*/
#include "aubio_priv.h"
#include "fvec.h"
struct aubio_filterbank_t_ {
uint_t win_s;
uint_t n_filters;
- fvec_t **filters;
+ fvec_t *filters;
};
aubio_filterbank_t * new_aubio_filterbank(uint_t n_filters, uint_t win_s){
- /** allocating space for filterbank object */
+ /* allocate space for filterbank object */
aubio_filterbank_t * fb = AUBIO_NEW(aubio_filterbank_t);
- uint_t filter_cnt;
fb->win_s=win_s;
fb->n_filters=n_filters;
- /** allocating filter tables */
- fb->filters=AUBIO_ARRAY(fvec_t*,n_filters);
- for (filter_cnt=0; filter_cnt<n_filters; filter_cnt++)
- /* considering one-channel filters */
- fb->filters[filter_cnt]=new_fvec(win_s, 1);
+ /* allocate filter tables, an fvec of length win_s and of filter_cnt channel */
+ fb->filters = new_fvec(win_s, n_filters);
return fb;
}
-/*
-FB initialization based on Slaney's auditory toolbox
-TODO:
- *solve memory leak problems while
- *solve quantization issues when constructing signal:
- *bug for win_s=512
- *corrections for win_s=1024 -> why even filters with smaller amplitude
-
-*/
-
-aubio_filterbank_t * new_aubio_filterbank_mfcc(uint_t n_filters, uint_t win_s, uint_t samplerate, smpl_t freq_min, smpl_t freq_max){
-
- aubio_filterbank_t * fb = new_aubio_filterbank(n_filters, win_s);
-
-
- //slaney params
- smpl_t lowestFrequency = 133.3333;
- smpl_t linearSpacing = 66.66666666;
- smpl_t logSpacing = 1.0711703;
-
- uint_t linearFilters = 13;
- uint_t logFilters = 27;
- uint_t allFilters = linearFilters + logFilters;
-
- //buffers for computing filter frequencies
- fvec_t * freqs=new_fvec(allFilters+2 , 1);
-
- fvec_t * lower_freqs=new_fvec( allFilters, 1);
- fvec_t * upper_freqs=new_fvec( allFilters, 1);
- fvec_t * center_freqs=new_fvec( allFilters, 1);
-
- fvec_t * triangle_heights=new_fvec( allFilters, 1);
- //lookup table of each bin frequency in hz
- fvec_t * fft_freqs=new_fvec(win_s, 1);
-
- uint_t filter_cnt, bin_cnt;
-
- //first step: filling all the linear filter frequencies
- for(filter_cnt=0; filter_cnt<linearFilters; filter_cnt++){
- freqs->data[0][filter_cnt]=lowestFrequency+ filter_cnt*linearSpacing;
- }
- smpl_t lastlinearCF=freqs->data[0][filter_cnt-1];
-
- //second step: filling all the log filter frequencies
- for(filter_cnt=0; filter_cnt<logFilters+2; filter_cnt++){
- freqs->data[0][filter_cnt+linearFilters] =
- lastlinearCF*(pow(logSpacing,filter_cnt+1));
- }
-
- //Option 1. copying interesting values to lower_freqs, center_freqs and upper freqs arrays
- //TODO: would be nicer to have a reference to freqs->data, anyway we do not care in this init step
-
- for(filter_cnt=0; filter_cnt<allFilters; filter_cnt++){
- lower_freqs->data[0][filter_cnt]=freqs->data[0][filter_cnt];
- center_freqs->data[0][filter_cnt]=freqs->data[0][filter_cnt+1];
- upper_freqs->data[0][filter_cnt]=freqs->data[0][filter_cnt+2];
- }
+void del_aubio_filterbank(aubio_filterbank_t * fb){
+ del_fvec(fb->filters);
+ AUBIO_FREE(fb);
+}
- //computing triangle heights so that each triangle has unit area
- for(filter_cnt=0; filter_cnt<allFilters; filter_cnt++){
- triangle_heights->data[0][filter_cnt] = 2./(upper_freqs->data[0][filter_cnt]
- - lower_freqs->data[0][filter_cnt]);
- }
-
- //AUBIO_DBG("filter tables frequencies\n");
- //for(filter_cnt=0; filter_cnt<allFilters; filter_cnt++)
- // AUBIO_DBG("filter n. %d %f %f %f %f\n",
- // filter_cnt, lower_freqs->data[0][filter_cnt],
- // center_freqs->data[0][filter_cnt], upper_freqs->data[0][filter_cnt],
- // triangle_heights->data[0][filter_cnt]);
-
- //filling the fft_freqs lookup table, which assigns the frequency in hz to each bin
- for(bin_cnt=0; bin_cnt<win_s; bin_cnt++){
- fft_freqs->data[0][bin_cnt]= aubio_bintofreq(bin_cnt, samplerate, win_s);
- }
+void aubio_filterbank_do(aubio_filterbank_t * f, cvec_t * in, fvec_t *out) {
+ uint_t i, j, fn;
- //building each filter table
- for(filter_cnt=0; filter_cnt<allFilters; filter_cnt++){
-
- //TODO:check special case : lower freq =0
- //calculating rise increment in mag/Hz
- smpl_t riseInc= triangle_heights->data[0][filter_cnt]/(center_freqs->data[0][filter_cnt]-lower_freqs->data[0][filter_cnt]);
-
- //zeroing begining of filter
- for(bin_cnt=0; bin_cnt<win_s-1; bin_cnt++){
- fb->filters[filter_cnt]->data[0][bin_cnt]=0.f;
- if( fft_freqs->data[0][bin_cnt] <= lower_freqs->data[0][filter_cnt] &&
- fft_freqs->data[0][bin_cnt+1] > lower_freqs->data[0][filter_cnt]) {
- break;
- }
- }
- bin_cnt++;
-
- //positive slope
- for(; bin_cnt<win_s-1; bin_cnt++){
- fb->filters[filter_cnt]->data[0][bin_cnt]=(fft_freqs->data[0][bin_cnt]-lower_freqs->data[0][filter_cnt])*riseInc;
- //if(fft_freqs->data[0][bin_cnt]<= center_freqs->data[0][filter_cnt] && fft_freqs->data[0][bin_cnt+1]> center_freqs->data[0][filter_cnt])
- if(fft_freqs->data[0][bin_cnt+1]> center_freqs->data[0][filter_cnt])
- break;
- }
- //bin_cnt++;
-
- //negative slope
- for(; bin_cnt<win_s-1; bin_cnt++){
-
- //checking whether last value is less than 0...
- smpl_t val=triangle_heights->data[0][filter_cnt]-(fft_freqs->data[0][bin_cnt]-center_freqs->data[0][filter_cnt])*riseInc;
- if(val>=0)
- fb->filters[filter_cnt]->data[0][bin_cnt]=val;
- else fb->filters[filter_cnt]->data[0][bin_cnt]=0.f;
-
- //if(fft_freqs->data[0][bin_cnt]<= upper_freqs->data[0][bin_cnt] && fft_freqs->data[0][bin_cnt+1]> upper_freqs->data[0][filter_cnt])
- //TODO: CHECK whether bugfix correct
- if(fft_freqs->data[0][bin_cnt+1]> upper_freqs->data[0][filter_cnt])
- break;
- }
- //bin_cnt++;
-
- //zeroing tail
- for(; bin_cnt<win_s; bin_cnt++)
- fb->filters[filter_cnt]->data[0][bin_cnt]=0.f;
+ /* apply filter to all input channel, provided out has enough channels */
+ uint_t max_channels = MIN(in->channels, out->channels);
+ uint_t max_filters = MIN(f->n_filters, out->length);
- }
-
-
- del_fvec(freqs);
- del_fvec(lower_freqs);
- del_fvec(upper_freqs);
- del_fvec(center_freqs);
+ /* reset all values in output vector */
+ fvec_zeros(out);
- del_fvec(triangle_heights);
- del_fvec(fft_freqs);
+ /* apply filters on all channels */
+ for (i = 0; i < max_channels; i++) {
- return fb;
+ /* for each filter */
+ for(fn = 0; fn < max_filters; fn++) {
-}
+ /* for each sample */
+ for(j = 0; j < in->length; j++) {
+ out->data[i][fn] += in->norm[i][j] * f->filters->data[fn][j];
+ }
-void del_aubio_filterbank(aubio_filterbank_t * fb){
- uint_t filter_cnt;
- /** deleting filter tables first */
- for (filter_cnt=0; filter_cnt<fb->n_filters; filter_cnt++)
- del_fvec(fb->filters[filter_cnt]);
- AUBIO_FREE(fb->filters);
- AUBIO_FREE(fb);
-}
+ /* threshold to VERY_SMALL_NUMBER to avoid log oveflow */
+ out->data[i][fn] = MAX(VERY_SMALL_NUMBER, out->data[i][fn]);
-void aubio_filterbank_do(aubio_filterbank_t * f, cvec_t * in, fvec_t *out) {
- uint_t n, filter_cnt;
- for(filter_cnt = 0; (filter_cnt < f->n_filters)
- && (filter_cnt < out->length); filter_cnt++){
- out->data[0][filter_cnt] = 0.f;
- for(n = 0; n < in->length; n++){
- out->data[0][filter_cnt] += in->norm[0][n]
- * f->filters[filter_cnt]->data[0][n];
- }
- out->data[0][filter_cnt] =
- LOG(out->data[0][filter_cnt] < VERY_SMALL_NUMBER ?
- VERY_SMALL_NUMBER : out->data[0][filter_cnt]);
+ /* compute logarithm */
+ out->data[i][fn] = LOG(out->data[i][fn]);
+ }
}
return;
}
-fvec_t * aubio_filterbank_getchannel(aubio_filterbank_t * f, uint_t channel) {
- if ( (channel < f->n_filters) ) { return f->filters[channel]; }
- else { return NULL; }
+fvec_t * aubio_filterbank_get_coeffs(aubio_filterbank_t * f) {
+ return f->filters;
}
/*
- Copyright (C) 2007 Amaury Hazan <ahazan@iua.upf.edu>
- and Paul Brossier <piem@piem.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 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.
-
- 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.
+ Copyright (C) 2007-2009 Paul Brossier <piem@aubio.org>
+ and Amaury Hazan <ahazan@iua.upf.edu>
+
+ This file is part of Aubio.
+
+ 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/>.
+
*/
/** \file
Filterbank object
- General-purpose spectral filterbank object. Comes with mel-filter initialization function.
+ General-purpose spectral filterbank object.
*/
aubio_filterbank_t * new_aubio_filterbank(uint_t n_filters, uint_t win_s);
-/** filterbank initialization for mel filters
-
-
- \param n_filters number of filters
- \param win_s window size
- \param samplerate
- \param freq_min lowest filter frequency
- \param freq_max highest filter frequency
-
-*/
-aubio_filterbank_t * new_aubio_filterbank_mfcc(uint_t n_filters, uint_t win_s, uint_t samplerate, smpl_t freq_min, smpl_t freq_max);
-
/** destroy filterbank object
\param fb filterbank, as returned by new_aubio_filterbank method
/** compute filterbank
+ \param fb filterbank containing nfilt x win_s filter coefficients
+ \param in input spectrum containing chans x win_s spectrum
+ \param out output vector containing chans x nfilt output values
+
*/
void aubio_filterbank_do(aubio_filterbank_t * fb, cvec_t * in, fvec_t *out);
-/** return the vector containing the filter coefficients of one channel
+/** return a pointer to the fvec object containing all filter coefficients
+
+ \param f filterbank object to get coefficients from
*/
-fvec_t * aubio_filterbank_getchannel(aubio_filterbank_t * f, uint_t channel);
+fvec_t * aubio_filterbank_get_coeffs(aubio_filterbank_t * f);
#ifdef __cplusplus
}
--- /dev/null
+/*
+ Copyright (C) 2007-2009 Paul Brossier <piem@aubio.org>
+ and Amaury Hazan <ahazan@iua.upf.edu>
+
+ This file is part of Aubio.
+
+ 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/>.
+
+*/
+
+#include "aubio_priv.h"
+#include "fvec.h"
+#include "cvec.h"
+#include "spectral/filterbank.h"
+#include "mathutils.h"
+
+void aubio_filterbank_set_mel_coeffs(aubio_filterbank_t *fb, uint_t samplerate, smpl_t freq_min, smpl_t freq_max){
+
+ fvec_t *filters = aubio_filterbank_get_coeffs(fb);
+ uint_t n_filters = filters->channels, win_s = filters->length;
+
+ //slaney params
+ smpl_t lowestFrequency = 133.3333;
+ smpl_t linearSpacing = 66.66666666;
+ smpl_t logSpacing = 1.0711703;
+
+ uint_t linearFilters = 13;
+ uint_t logFilters = 27;
+ uint_t allFilters = linearFilters + logFilters;
+
+ //buffers for computing filter frequencies
+ fvec_t * freqs=new_fvec(allFilters+2 , 1);
+
+ fvec_t * lower_freqs=new_fvec( allFilters, 1);
+ fvec_t * upper_freqs=new_fvec( allFilters, 1);
+ fvec_t * center_freqs=new_fvec( allFilters, 1);
+
+ fvec_t * triangle_heights=new_fvec( allFilters, 1);
+ //lookup table of each bin frequency in hz
+ fvec_t * fft_freqs=new_fvec(win_s, 1);
+
+ uint_t filter_cnt, bin_cnt;
+
+ //first step: filling all the linear filter frequencies
+ for(filter_cnt=0; filter_cnt<linearFilters; filter_cnt++){
+ freqs->data[0][filter_cnt]=lowestFrequency+ filter_cnt*linearSpacing;
+ }
+ smpl_t lastlinearCF=freqs->data[0][filter_cnt-1];
+
+ //second step: filling all the log filter frequencies
+ for(filter_cnt=0; filter_cnt<logFilters+2; filter_cnt++){
+ freqs->data[0][filter_cnt+linearFilters] =
+ lastlinearCF*(pow(logSpacing,filter_cnt+1));
+ }
+
+ //Option 1. copying interesting values to lower_freqs, center_freqs and upper freqs arrays
+ //TODO: would be nicer to have a reference to freqs->data, anyway we do not care in this init step
+
+ for(filter_cnt=0; filter_cnt<allFilters; filter_cnt++){
+ lower_freqs->data[0][filter_cnt]=freqs->data[0][filter_cnt];
+ center_freqs->data[0][filter_cnt]=freqs->data[0][filter_cnt+1];
+ upper_freqs->data[0][filter_cnt]=freqs->data[0][filter_cnt+2];
+ }
+
+ //computing triangle heights so that each triangle has unit area
+ for(filter_cnt=0; filter_cnt<allFilters; filter_cnt++){
+ triangle_heights->data[0][filter_cnt] = 2./(upper_freqs->data[0][filter_cnt]
+ - lower_freqs->data[0][filter_cnt]);
+ }
+
+ //AUBIO_DBG("filter tables frequencies\n");
+ //for(filter_cnt=0; filter_cnt<allFilters; filter_cnt++)
+ // AUBIO_DBG("filter n. %d %f %f %f %f\n",
+ // filter_cnt, lower_freqs->data[0][filter_cnt],
+ // center_freqs->data[0][filter_cnt], upper_freqs->data[0][filter_cnt],
+ // triangle_heights->data[0][filter_cnt]);
+
+ //filling the fft_freqs lookup table, which assigns the frequency in hz to each bin
+ for(bin_cnt=0; bin_cnt<win_s; bin_cnt++){
+ fft_freqs->data[0][bin_cnt]= aubio_bintofreq(bin_cnt, samplerate, win_s);
+ }
+
+ //building each filter table
+ for(filter_cnt=0; filter_cnt<allFilters; filter_cnt++){
+
+ //TODO:check special case : lower freq =0
+ //calculating rise increment in mag/Hz
+ smpl_t riseInc= triangle_heights->data[0][filter_cnt]/(center_freqs->data[0][filter_cnt]-lower_freqs->data[0][filter_cnt]);
+
+ //zeroing begining of filter
+ for(bin_cnt=0; bin_cnt<win_s-1; bin_cnt++){
+ filters->data[filter_cnt][bin_cnt]=0.0;
+ if( fft_freqs->data[0][bin_cnt] <= lower_freqs->data[0][filter_cnt] &&
+ fft_freqs->data[0][bin_cnt+1] > lower_freqs->data[0][filter_cnt]) {
+ break;
+ }
+ }
+ bin_cnt++;
+
+ //positive slope
+ for(; bin_cnt<win_s-1; bin_cnt++){
+ filters->data[filter_cnt][bin_cnt]=(fft_freqs->data[0][bin_cnt]-lower_freqs->data[0][filter_cnt])*riseInc;
+ //if(fft_freqs->data[0][bin_cnt]<= center_freqs->data[0][filter_cnt] && fft_freqs->data[0][bin_cnt+1]> center_freqs->data[0][filter_cnt])
+ if(fft_freqs->data[0][bin_cnt+1]> center_freqs->data[0][filter_cnt])
+ break;
+ }
+ //bin_cnt++;
+
+ //negative slope
+ for(; bin_cnt<win_s-1; bin_cnt++){
+
+ //checking whether last value is less than 0...
+ smpl_t val=triangle_heights->data[0][filter_cnt]-(fft_freqs->data[0][bin_cnt]-center_freqs->data[0][filter_cnt])*riseInc;
+ if(val>=0)
+ filters->data[filter_cnt][bin_cnt]=val;
+ else filters->data[filter_cnt][bin_cnt]=0.0;
+
+ //if(fft_freqs->data[0][bin_cnt]<= upper_freqs->data[0][bin_cnt] && fft_freqs->data[0][bin_cnt+1]> upper_freqs->data[0][filter_cnt])
+ //TODO: CHECK whether bugfix correct
+ if(fft_freqs->data[0][bin_cnt+1]> upper_freqs->data[0][filter_cnt])
+ break;
+ }
+ //bin_cnt++;
+
+ //zeroing tail
+ for(; bin_cnt<win_s; bin_cnt++)
+ filters->data[filter_cnt][bin_cnt]=0.f;
+
+ }
+
+ /* destroy temporarly allocated vectors */
+ del_fvec(freqs);
+ del_fvec(lower_freqs);
+ del_fvec(upper_freqs);
+ del_fvec(center_freqs);
+
+ del_fvec(triangle_heights);
+ del_fvec(fft_freqs);
+
+}
+
--- /dev/null
+/*
+ Copyright (C) 2007-2009 Paul Brossier <piem@aubio.org>
+ and Amaury Hazan <ahazan@iua.upf.edu>
+
+ This file is part of Aubio.
+
+ 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/>.
+
+*/
+
+/** \file
+
+ Mel frequency filter bankd coefficients
+
+ Set filter bank coefficients to Mel frequency bands.
+
+ The filter coefficients are built according to Malcolm Slaney's Auditory
+ Toolbox available at http://cobweb.ecn.purdue.edu/~malcolm/interval/1998-010/
+ (see the file mfcc.m).
+
+*/
+
+#ifndef FILTERBANK_MEL_H
+#define FILTERBANK_MEL_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "filterbank.h"
+
+/** filterbank initialization for mel filters
+
+ \param n_filters number of filters
+ \param win_s window size
+ \param samplerate
+ \param freq_min lowest filter frequency
+ \param freq_max highest filter frequency
+
+*/
+void aubio_filterbank_set_mel_coeffs(aubio_filterbank_t *fb, uint_t samplerate, smpl_t freq_min, smpl_t freq_max);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // FILTERBANK_MEL_H
#include "fvec.h"
#include "cvec.h"
#include "spectral/fft.h"
-#include "spectral/filterbank.h"
+#include "spectral/filterbank_mel.h"
#include "spectral/mfcc.h"
/** Internal structure for mfcc object **/
/** filterbank allocation */
- mfcc->fb = new_aubio_filterbank_mfcc(n_filters, mfcc->win_s, samplerate, lowfreq, highfreq);
+ mfcc->fb = new_aubio_filterbank(n_filters, mfcc->win_s);
+ aubio_filterbank_set_mel_coeffs(mfcc->fb, samplerate, lowfreq, highfreq);
/** allocating space for fft object (used for dct) */
mfcc->fft_dct=new_aubio_fft(n_filters, 1);
/* filterbank */
aubio_filterbank_t * new_aubio_filterbank(uint_t win_s, uint_t channels);
-aubio_filterbank_t * new_aubio_filterbank_mfcc(uint_t n_filters, uint_t win_s, uint_t samplerate, smpl_t freq_min, smpl_t freq_max);
+void aubio_filterbank_set_mel_coeffs(aubio_filterbank_t *fb, uint_t samplerate, smpl_t freq_min, smpl_t freq_max);
void del_aubio_filterbank(aubio_filterbank_t * fb);
void aubio_filterbank_do(aubio_filterbank_t * fb, cvec_t * in, fvec_t *out);
-fvec_t * aubio_filterbank_getchannel(aubio_filterbank_t * fb, uint_t channel);
+fvec_t * aubio_filterbank_get_coeffs(aubio_filterbank_t * fb);
/* mfcc */
aubio_mfcc_t * new_aubio_mfcc (uint_t win_s, uint_t samplerate, uint_t n_filters, uint_t n_coefs, smpl_t lowfreq, smpl_t highfreq, uint_t channels);
projects / aubio.git / commitdiff