1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
6 Centre for Digital Music, Queen Mary, University of London.
7 This file copyright 2005 Nicolas Chetry, copyright 2008 QMUL.
9 This program is free software; you can redistribute it and/or
10 modify it under the terms of the GNU General Public License as
11 published by the Free Software Foundation; either version 2 of the
12 License, or (at your option) any later version. See the file
13 COPYING included with this distribution for more information.
19 #include "base/Window.h"
31 FS(_FS), fftsize(2048), nceps(19),
32 logpower(1.0), want_c0(true), window(HammingWindow) { }
38 MFCC(MFCCConfig config);
42 * Process time-domain input data. inframe must contain
43 * getfftlength() samples. outceps must contain space for nceps
44 * values, plus one if want_c0 is specified.
46 int process(const double *inframe, double *outceps);
49 * Process time-domain input data. real and imag must contain
50 * getfftlength()/2+1 elements (i.e. the conjugate half of the FFT
51 * is not expected). outceps must contain space for nceps values,
52 * plus one if want_c0 is specified.
54 int process(const double *real, const double *imag, double *outceps);
56 int getfftlength() const { return fftSize; }
59 /* Filter bank parameters */
60 double lowestFrequency;
79 double **mfccDCTMatrix;
80 double **mfccFilterWeights;
82 /* The analysis window */
83 Window<double> *window;
92 /* Set if user want C0 */