1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
2 
3 /*
4     QM DSP library
5     Centre for Digital Music, Queen Mary, University of London.
6     This file Copyright 2006 Chris Cannam.
7 
8     This program is free software; you can redistribute it and/or
9     modify it under the terms of the GNU General Public License as
10     published by the Free Software Foundation; either version 2 of the
11     License, or (at your option) any later version.  See the file
12     COPYING included with this distribution for more information.
13 */
14 
15 #ifndef QM_DSP_PITCH_H
16 #define QM_DSP_PITCH_H
17 
18 /**
19  * Convert between musical pitch (i.e. MIDI pitch number) and
20  * fundamental frequency.
21  */
22 class Pitch
23 {
24 public:
25     static float getFrequencyForPitch(int midiPitch,
26                                       float centsOffset = 0,
27                                       float concertA = 440.0);
28 
29     static int getPitchForFrequency(float frequency,
30                                     float *centsOffsetReturn = 0,
31                                     float concertA = 440.0);
32 };
33 
34 
35 #endif
36