bdcefb4850
We can't go to 3.0.1 yet as there are still build issues on Linux and OSX. You can get Windows to build, but there's still some display issues. These changes should work with wxWidgets 2.8.12 as well, so we can take our time to get things working properly before switching over.
58 lines
2.1 KiB
C
58 lines
2.1 KiB
C
/**********************************************************************
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Audacity: A Digital Audio Editor
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Audacity(R) is copyright (c) 1999-2013 Audacity Team.
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License: GPL v2. See License.txt.
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PitchName.h
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Vaughan Johnson, Dominic Mazzoni
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******************************************************************//**
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utilities for converting among frequency, MIDI note number,
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pitch index, pitch name
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*//*******************************************************************/
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#ifndef __AUDACITY_PITCHNAME__
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#define __AUDACITY_PITCHNAME__
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#include <wx/wx.h>
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// FreqToMIDInote takes a frequency in Hz (exponential scale relative to
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// alphabetic pitch names) and returns a pitch ID number (linear
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// scale), such that A440 (A4) is 69, middle C (C4) is 60, etc.
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// Each register starts with C (e.g., for middle C and A440,
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// it's register 4).
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// MIDI note number 0 is C-1 in Scientific pitch notation.
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double FreqToMIDInote(const double freq);
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double MIDInoteToFreq(const double dMIDInote);
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// PitchIndex returns the [0,11] index for a double MIDI note number,
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// per result from FreqToMIDInote, corresponding to modulo 12
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// of the integer part of (dMIDInote + 0.5), so 0=C, 1=C#, etc.
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unsigned int PitchIndex(const double dMIDInote);
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// PitchOctave returns the octave index for a double dMIDInote note number,
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// per result from FreqToMIDInote.
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// MIDI note number 0 is C-1 in Scientific pitch notation.
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int PitchOctave(const double dMIDInote);
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// PitchName takes dMIDInote (per result from
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// FreqToMIDInote) and returns a standard pitch/note name [C, C#, etc.).
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// Sharps are the default, unless, bWantFlats is true.
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wxChar * PitchName(const double dMIDInote, const bool bWantFlats = false);
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// PitchName_Absolute does the same thing as PitchName, but appends
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// the octave number, e.g., instead of "C" it will return "C4"
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// if the dMIDInote corresonds to middle C, i.e., is 60.
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wxChar * PitchName_Absolute(const double dMIDInote, const bool bWantFlats = false);
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double PitchToMIDInote(const unsigned int nPitchIndex, const int nPitchOctave);
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double PitchToFreq(const unsigned int nPitchIndex, const int nPitchOctave);
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#endif // __AUDACITY_PITCHNAME__
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