workspace/khotkeys/libkhotkeysprivate/voicesignature.h

   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Olivier Goffart   *
   3  *   ogoffart@kde.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                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.             *
  19  ***************************************************************************/
  20 #ifndef SIGNATURE_H
  21 #define SIGNATURE_H
  22
  23
  24 #include <QVector>
  25 #include <QtCore/QMap>
  26 #include <kdemacros.h>
  27 #include <KConfig>
  28
  29 class Sound;
  30
  31
  32 #define WINDOW_MINIMUM 0.10
  33 #define WINDOW_MINIMUM_ECART 200
  34 #define WINDOW_NUMBER 7
  35 #define WINDOW_SUPER 0.43
  36 #define WINDOW_UNIT sound.fs()/4
  37 #define FOUR_NUMBER 7
  38 #define FOUR_SUPER 0
  39
  40
  41 #define FFT_RANGE_INF 370
  42 #define FFT_RANGE_SUP 2000
  43 // #define FFT_PONDERATION(f) ((double)log(1+(f))/log(10))
  44 #define FFT_PONDERATION(f) 1
  45
  46
  47 // theses settings are better in a 8000Hz fs
  48 /*#define FFT_RANGE_INF 300
  49 #define FFT_RANGE_SUP 1500*/
  50
  51
  52 //#define REJECT_FACTOR_ECART_REL 0.5
  53 #define REJECT_FACTOR_DIFF 0.0018
  54
  55
  56
  57 #define HAMMING false
  58
  59
  60
  61
  62 namespace KHotKeys
  63 {
  64
  65
  66 /**
  67 @author Olivier Goffart
  68 */
  69 class KDE_EXPORT VoiceSignature{
  70 public:
  71     explicit VoiceSignature(const Sound& s);
  72
  73         VoiceSignature(){}
  74         ~VoiceSignature();
  75
  76         QMap<int, QMap<int, double> > data;
  77
  78         static QMap<int, QMap<int, double> > pond;
  79
  80         static float diff(const VoiceSignature &s1, const VoiceSignature &s2);
  81
  82
  83         static int size1();
  84         static int size2();
  85
  86
  87         static QVector<double> fft(const Sound& sound, unsigned int start, unsigned int stop);
  88         static bool window(const Sound& sound, unsigned int *start, unsigned int *stop);
  89
  90         void write(KConfigGroup& cfg, const QString &key) const;
  91         void read(KConfigGroup& cfg, const QString &key);
  92
  93         inline bool isNull() const
  94         {
  95                 return data.isEmpty();
  96         }
  97 };
  98
  99 }
 100
 101 #endif