svcore  1.9
Pitch.h
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00001 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
00002 
00003 /*
00004     Sonic Visualiser
00005     An audio file viewer and annotation editor.
00006     Centre for Digital Music, Queen Mary, University of London.
00007     This file copyright 2006 Chris Cannam.
00008     
00009     This program is free software; you can redistribute it and/or
00010     modify it under the terms of the GNU General Public License as
00011     published by the Free Software Foundation; either version 2 of the
00012     License, or (at your option) any later version.  See the file
00013     COPYING included with this distribution for more information.
00014 */
00015 
00016 #ifndef _PITCH_H_
00017 #define _PITCH_H_
00018 
00019 #include <QString>
00020 
00021 class Pitch
00022 {
00023 public:
00033     static float getFrequencyForPitch(int midiPitch,
00034                                       float centsOffset = 0,
00035                                       float concertA = 0.0);
00036 
00049     static int getPitchForFrequency(float frequency,
00050                                     float *centsOffsetReturn = 0,
00051                                     float concertA = 0.0);
00052 
00067     static int getPitchForFrequencyDifference(float frequencyA,
00068                                               float frequencyB,
00069                                               float *centsOffsetReturn = 0,
00070                                               float concertA = 0.0);
00071 
00085     static QString getPitchLabel(int midiPitch,
00086                                  float centsOffset = 0,
00087                                  bool useFlats = false);
00088 
00100     static QString getPitchLabelForFrequency(float frequency,
00101                                              float concertA = 0.0,
00102                                              bool useFlats = false);
00103 
00108     static QString getLabelForPitchRange(int semis, float cents = 0);
00109 
00121     static bool isFrequencyInMidiRange(float frequency,
00122                                        float concertA = 0.0);
00123 };
00124 
00125 
00126 #endif