57 lines
1.9 KiB
C
57 lines
1.9 KiB
C
/**********************************************************************
|
|
|
|
Audacity: A Digital Audio Editor
|
|
|
|
PitchName.h
|
|
|
|
Copyright 2005-9, Vaughan Johnson and Dominic Mazzoni.
|
|
All rights reserved.
|
|
|
|
Utilities for converting from frequency to pitch
|
|
and from pitch to absolute (e.g., C4 for middle C)
|
|
or nominal (A through G#) pitch name.
|
|
|
|
**********************************************************************/
|
|
|
|
#ifndef __AUDACITY_PITCHNAME__
|
|
#define __AUDACITY_PITCHNAME__
|
|
|
|
#include <wx/defs.h>
|
|
|
|
// FreqToMIDInoteNumber takes a frequency in Hz (exponential scale relative to
|
|
// alphabetic pitch names) and returns a pitch ID number (linear
|
|
// scale), such that A440 (A4) is 69, middle C (C4) is 60, etc.
|
|
// Each register starts with C (e.g., for middle C and A440,
|
|
// it's register 4).
|
|
double FreqToMIDInoteNumber(double freq);
|
|
|
|
// PitchIndex returns the [0,11] index for a double pitchNum,
|
|
// as per result from FreqToMIDInoteNumber, corresponding to modulo 12
|
|
// of the integer part of (pitchNum + 0.5), so 0=C, 1=C#, etc.
|
|
unsigned int PitchIndex(double pitchNum);
|
|
|
|
// PitchName takes pitchNum (as per result from
|
|
// FreqToMIDInoteNumber) and returns a standard pitch/note name [C, C#, etc.).
|
|
// Sharps are the default, unless, bWantFlats is true.
|
|
wxChar * PitchName(double pitchNum, bool bWantFlats = false);
|
|
|
|
// PitchName_Absolute does the same thing as PitchName, but appends
|
|
// the register number, e.g., instead of "C" it will return "C4"
|
|
// if the pitchNum corresonds to middle C.
|
|
// Sharps are the default, unless, bWantFlats is true.
|
|
wxChar * PitchName_Absolute(double pitchNum, bool bWantFlats = false);
|
|
|
|
#endif // __AUDACITY_PITCHNAME__
|
|
|
|
// Indentation settings for Vim and Emacs and unique identifier for Arch, a
|
|
// version control system. Please do not modify past this point.
|
|
//
|
|
// Local Variables:
|
|
// c-basic-offset: 3
|
|
// indent-tabs-mode: nil
|
|
// End:
|
|
//
|
|
// vim: et sts=3 sw=3
|
|
// arch-tag: 1cd2b819-63b6-4051-9991-37165f236037
|
|
|