MusicalNotes Class Reference

Determination of the frequency of a music note. More...

#include <MusicalNotes.h>

Public Types
enum	MusicalNotesEnum {   C , CS , D , DS ,   E , F , FS , G ,   GS , A , AS , B }
	Notes. More...

Public Member Functions
float	frequency (MusicalNotesEnum note, uint8_t octave) const
	Determines the frequency of the indicate note and octave (0-8)
float	frequency (uint16_t idx) const
	Determines the frequency of the indicate note index from 0 to 107.
int	frequencyCount () const
int	frequencyToMidiNote (float freq) const
	Provide MIDI note for frequency.
bool	isAudible (float frequency) const
	Returns true if the frequency is audible (in the range of 20 Hz to 20 kHz)
float	mainFrequency (uint64_t idx) const
	Determines the frequency of the indicate main note index from 0 to 62.
float	mainFrequency (uint8_t mainNoteIdx, uint8_t octave) const
	Determines the frequency of the indicate main note index (0-6) and octave (0-8)
float	midiNoteToFrequency (int x) const
	Determine frequency of MIDI note.
const char *	note (float frequency) const
	Determines the closes note for a frequency.
const char *	note (float frequency, float &diff) const
	Determines the closes note for a frequency. We also return the frequency difference.
const char *	noteAt (int idx)
	Provides the note name for an index position.
float	stkNoteToFrequency (int noteNumber) const

Protected Attributes
float	notes [9][12]
const char *	notes_str [9 *12]

Detailed Description

Determination of the frequency of a music note.

Author

Phil Schatzmann

Copyright

GPLv3

Member Function Documentation

frequency() [1/2]

float frequency ( MusicalNotesEnum  note, uint8_t  octave  ) const

inline

Determines the frequency of the indicate note and octave (0-8)

frequency() [2/2]

float frequency ( uint16_t  idx ) const

inline

Determines the frequency of the indicate note index from 0 to 107.

frequencyCount()

int frequencyCount ( ) const

inline

frequencyToMidiNote()

int frequencyToMidiNote ( float  freq ) const

inline

Provide MIDI note for frequency.

isAudible()

bool isAudible ( float  frequency ) const

inline

Returns true if the frequency is audible (in the range of 20 Hz to 20 kHz)

mainFrequency() [1/2]

float mainFrequency ( uint64_t  idx ) const

inline

Determines the frequency of the indicate main note index from 0 to 62.

mainFrequency() [2/2]

float mainFrequency ( uint8_t  mainNoteIdx, uint8_t  octave  ) const

inline

Determines the frequency of the indicate main note index (0-6) and octave (0-8)

midiNoteToFrequency()

float midiNoteToFrequency ( int  x ) const

inline

Determine frequency of MIDI note.

note() [1/2]

const char * note ( float  frequency ) const

inline

Determines the closes note for a frequency.

note() [2/2]

const char * note ( float  frequency, float &  diff  ) const

inline

Determines the closes note for a frequency. We also return the frequency difference.

noteAt()

const char * noteAt ( int  idx )

inline

Provides the note name for an index position.

stkNoteToFrequency()

float stkNoteToFrequency ( int  noteNumber ) const

inline

Member Data Documentation

notes

float notes[9][12]

protected

Initial value:

= {
        { 16.35f ,  17.32f ,  18.35f ,  19.45f ,  20.60f ,  21.83f ,  23.12f ,  24.50f ,  25.96f ,  27.50f ,  29.14f ,  30.87f },
        { 32.70f ,  34.65f ,  36.71f ,  38.89f ,  41.20f ,  43.65f ,  46.25f ,  49.00f ,  51.91f ,  55.00f ,  58.27f ,  61.74f },
        { 65.41f ,  69.30f ,  73.42f ,  77.78f ,  82.41f ,  87.31f ,  92.50f ,  98.00f ,  103.83f ,  110.00f ,  116.54f ,  123.47f },
        { 130.81f ,  138.59f ,  146.83f ,  155.56f ,  164.81f ,  174.61f ,  185.00f ,  196.00f ,  207.65f ,  220.00f ,  233.08f ,  246.94f },
        { 261.63f ,  277.18f ,  293.66f ,  311.13f ,  329.63f ,  349.23f ,  369.99f ,  392.00f ,  415.30f ,  440.00f ,  466.16f ,  493.88f },
        { 523.25f ,  554.37f ,  587.33f ,  622.25f ,  659.25f ,  698.46f ,  739.99f ,  783.99f ,  830.61f ,  880.00f ,  932.33f ,  987.77f },
        { 1046.5f ,  1108.73f ,  1174.66f ,  1244.51f ,  1318.51f ,  1396.91f ,  1479.89f ,  1567.89f ,  1661.22f ,  1760.00f ,  1864.66f ,  1975.53f },
        { 2093.00f ,  2217.46f ,  2349.32f ,  2489.02f ,  2637.02f ,  2793.83f ,  2959.96f ,  3135.96f ,  3322.44f ,  3520.00f ,  3729.31f ,  3951.07f },
        { 4186.01f ,  4434.92f ,  4698.63f ,  4978.03f ,  5274.04f ,  5587.65f ,  5919.91f ,  6271.93f ,  6644.88f ,  7040.00f ,  7458.62f ,  7902.13f }
    }

notes_str

const char* notes_str[9 *12]

protected

Initial value:

= {
         "C0","CS0","D0","DS0","E0","F0","FS0","G0","GS0","A0","AS0","B0",
         "C1","CS1","D1","DS1","E1","F1","FS1","G1","GS1","A1","AS1","B1",
         "C2","CS2","D2","DS2","E2","F2","FS2","G2","GS2","A2","AS2","B2",
         "C3","CS3","D3","DS3","E3","F3","FS3","G3","GS3","A3","AS3","B3",
         "C4","CS4","D4","DS4","E4","F4","FS4","G4","GS4","A4","AS4","B4",
         "C5","CS5","D5","DS5","E5","F5","FS5","G5","GS5","A5","AS5","B5",
         "C6","CS6","D6","DS6","E6","F6","FS6","G6","GS6","A6","AS6","B6",
         "C7","CS7","D7","DS7","E7","F7","FS7","G7","GS7","A7","AS7","B7",
         "C8","CS8","D8","DS8","E8","F8","FS8","G8","GS8","A8","AS8","B8"
    }

---

The documentation for this class was generated from the following file:

• src/AudioTools/CoreAudio/MusicalNotes.h