Class `Interval`

Interval between two notes, or to build a second note from the first.

Section

Section	Summary
Intervals	Interval constants

Field	Type	Summary
Label	number	Label of the interval = diatonic degree If integer, one of `IL_*` constants (`IL_UNISON` to `IL_OCTAVE`).
Octaves	int	Number of octaves for compound intervals.
Quality	number	Interval quality (minor, major, diminished) If integer, one of `IQ_*` constants (`IQ_MINOR`, `IQ_AUGMENTED`...)

Return type	Function and summary
Interval	new(int label, int quality, int octaves) Constructor of Interval object
boolean	isPerfectQualityAllowed() Is perfect quality applicable for the label?
string, string, int, int	secondNote(nameOrSymbol) Calculate the second note of the interval.
number	semitones() Return the semitones covered by this interval.

Number of octaves for compound intervals.

i.e. ninth is octave+second -> 1 octave.

Label of the interval = diatonic degree If integer, one of IL_* constants (IL_UNISON to IL_OCTAVE).

Interval quality (minor, major, diminished) If integer, one of IQ_* constants (IQ_MINOR, IQ_AUGMENTED...)

Constructor of Interval object

Parameter	Type	Description
label	int	One of `IL_` constants, from `IL_UNISSON` to `IL_OCTAVE`. If more than one octave, sum of `2 IL_OCTAVE + IL_FIFTH`
quality	int	One of `IQ_*` constants, e.g. `IQ_PERFECT`, `IQ_MAJOR`,`IQ_MINOR`, `IQ_AUGMENTED`, `IQ_DOUBLE_DIMINISHED`...
octaves	int	Octave shift, 0, +1, -1...

Is perfect quality applicable for the label?

Return: boolean: true if unisson, fourth, fifth and octave, false otherwise.

Return the semitones covered by this interval.

for example 0 for unison, 3 for minor third, 7 for perfect fifth...

Calculate the second note of the interval.

Parameter	Type	Default	Description
nameOrSymbol			string Note name in English (for example "C#", "Eb") or Symbol.

Returns: string: Anglo-saxon second note's name, that may be NOT compatible with MyrScript Symbol.AngloSaxonName, such as Bb-1, C10...; string: Anglo-saxon second note's name, always compatible with MyrScript Symbol.AngloSaxonName, such as 11 for B-1, and always in 0 (C-1)..127 (G9) bounds.; int: pitch Pitch between 0 and 127, 60=C4; int: Accidental constant from MSDefine (NATURAL, FLAT, SHARP...) for the note