Class Note

constructor

• new Note(diatonicId: number, accidental: number): Note

  Create new Note object instance.

  Parameters

  • diatonicId: number

    Diatonic id.

  • accidental: number

    Accidental (-2, -1, 0, 1 or 2).

  Returns Note

• new Note(diatonicClass: number, accidental: number, octave: number): Note

  Create new Note object instance.

  Parameters

  • diatonicClass: number

    Diatonic class [0, 11].

  • accidental: number

    Accidental (-2, -1, 0, 1 or 2).

  • octave: number

    Octave.

  Returns Note

• new Note(noteLetter: string, accidental: number, octave: number): Note

  Create new Note object instance.

  Parameters

  • noteLetter: string

    Note letter (e.g. "C").

  • accidental: number

    Accidental (-2, -1, 0, 1 or 2).

  • octave: number

    Octave.

  Returns Note

Readonlyaccidental

ReadonlydiatonicClass

Readonlyoctave

chromaticClass

• get chromaticClass(): number

  Chromatic class getter.

  Returns number

chromaticId

• get chromaticId(): number

  Chromatic id getter.

  Returns number

diatonicId

• get diatonicId(): number

  Diatonic id getter.

  Returns number

midiNumber

• get midiNumber(): number

  Midi number getter (implemented same as chromatic id).

  Returns number

noteLetter

• get noteLetter(): NoteLetter

  Note letter getter.

  Returns NoteLetter

format

• format(pitchNotation: PitchNotation, symbolSet: SymbolSet): string

  Format note to string presentation.

  Parameters

  • pitchNotation: PitchNotation

    Pitchy notation.

  • symbolSet: SymbolSet

    Symbol set.

  Returns string

  • String presentation of note.

formatOmitOctave

• formatOmitOctave(symbolSet: SymbolSet): string

  Format note to string presentation without octave number.

  Parameters

  • symbolSet: SymbolSet

    Symbol set.

  Returns string

  • String presentation of note without octave number.

StaticcompareFunc

• compareFunc(a: Note, b: Note): -1 | 0 | 1

  Function to compare two notes using diatonic id and accidental properties of notes.

  Parameters

  • a: Note

    Note a.

  • b: Note

    Note b.

  Returns -1 | 0 | 1

  • -1, 0 or 1.

Staticequals

• equals(a: undefined | null | Note, b: undefined | null | Note): boolean

  Test if given two notes are equal.

  Parameters

  • a: undefined | null | Note

    Note a.

  • b: undefined | null | Note

    Note b.

  Returns boolean

  • True/false.

StaticfindNextDiatonicIdAbove

• findNextDiatonicIdAbove(
      diatonicId: number,
      bottomDiatonicId: number,
      addOctaveIfEqual: boolean,
  ): number

  Find next lowest possible diatonic id that is above given bottom level.

  Parameters

  • diatonicId: number

    Diatonic id to begin with.

  • bottomDiatonicId: number

    Bottom diatonic id.

  • addOctaveIfEqual: boolean

    If true then add one octave if diatonic id would equal to bottom diatonic id.

  Returns number

  • Diatonic id.

StaticgetAccidental

• getAccidental(accidentalSymbol: string): Accidental

  Get accidental value from given accidental symbol.

  Parameters

  • accidentalSymbol: string

    Accidental symbol (e.g. "#").

  Returns Accidental

  • Accidental vlaue.

StaticgetAccidentalSymbol

• getAccidentalSymbol(
      accidental: Accidental,
      symbolsSet: SymbolSet,
  ): undefined | string

  Get symbol of given accidental in given symbol set (ascii/unicide).

  Parameters

  • accidental: Accidental

    Accidental.

  • symbolsSet: SymbolSet

    Symbol set.

  Returns undefined | string

  • Accidental symbol or undefined (invalid accidental).

StaticgetChromaticClass

• getChromaticClass(chromaticId: number): number

  Get chromatic class from chromatic id.

  Parameters

  • chromaticId: number

    Chromatic id.

  Returns number

  • Chromatic class.

StaticgetChromaticIdInOctave

• getChromaticIdInOctave(chromaticId: number, octave: number): number

  Get chromatic id in given octave (transposes chromatic id to given octave).

  Parameters

  • chromaticId: number

    Original chromatic id.

  • octave: number

    Octave.

  Returns number

  • Transpose chromatic id.

StaticgetChromaticNote

• getChromaticNote(chromaticId: number): Note

  Get chromatic note. There are number of alternatives, this function uses simple logic to choose one.

  Parameters

  • chromaticId: number

    Chromatic id.

  Returns Note

  • Note.

StaticgetDiatonicClass

• getDiatonicClass(diatonicId: number): number

  GEt diatoni class from diatonic id.

  Parameters

  • diatonicId: number

    Diatonicid.

  Returns number

• getDiatonicClass(noteName: string): number

  Getdiatonic class from note name.

  Parameters

  • noteName: string

    Note name.

  Returns number

StaticgetDiatonicIdInOctave

• getDiatonicIdInOctave(diatonicId: number, octave: number): number

  Get diatonic id in given octave (transposes diatonic id to given octave).

  Parameters

  • diatonicId: number

    Original diatonic id.

  • octave: number

    Octave.

  Returns number

  • Transposed diatonic id.

StaticgetNote

• getNote(noteName: string): Note

  Get note.

  Parameters

  • noteName: string

    Note name (e.g. "C4").

  Returns Note

  • Note.

StaticgetNoteLetter

• getNoteLetter(diatonicId: number): NoteLetter

  Get note letter from given diatonic id.

  Parameters

  • diatonicId: number

    Diatonic id.

  Returns NoteLetter

  • Note letter.

StaticgetOctaveFromChromaticId

• getOctaveFromChromaticId(chromaticId: number): number

  Get octave from chromatic id.

  Parameters

  • chromaticId: number

    Chromatic id.

  Returns number

  • Octave.

StaticgetOctaveFromDiatonicId

• getOctaveFromDiatonicId(diatonicId: number): number

  Get octave from diatonic id.

  Parameters

  • diatonicId: number

    Diatonic id.

  Returns number

  • Octave.

StaticgetScientificNoteName

• getScientificNoteName(noteName: string, symbolSet: SymbolSet): string

  Get scientific note name from given note name.

  Parameters

  • noteName: string

    Note name.

  • symbolSet: SymbolSet

    Symbol set (ascii/unicode) for scientific note name.

  Returns string

  • Scientific note name.

StaticisValidNoteName

• isValidNoteName(noteName: string): boolean

  Test if given string is valid note name.

  Parameters

  • noteName: string

    Note name to validate.

  Returns boolean

  • True/false.

StaticparseNote

• parseNote(noteName: string): undefined | Readonly<ParsedNote>

  Parse note name string to note props.

  Parameters

  • noteName: string

    Note name to parse.

  Returns undefined | Readonly<ParsedNote>

  • Parsed note props or undefined if parsing error.

StaticremoveDuplicates

• removeDuplicates(notes: readonly Note[]): Note[]

  Remove duplicate notes.

  Parameters

  • notes: readonly Note[]

    Array of notes.

  Returns Note[]

  Sorted set of notes.

StaticreplaceAccidentalSymbols

• replaceAccidentalSymbols(str: string, symbolSet: SymbolSet): string

  Replace accidental symbols in given string to givn symbol set (ascii/unicode).

  Parameters

  • str: string

    String to replace.

  • symbolSet: SymbolSet

    Symbol set.

  Returns string

  • String with updated accidental symbols.

Staticsort

• sort(notes: readonly Note[]): Note[]

  Sort notes by diatonicId in ascending order.

  Parameters

  • notes: readonly Note[]

    Array of notes.

  Returns Note[]

  Sorted array of notes.

StaticvalidateAccidental

• validateAccidental(acc: unknown): Accidental

  Validate if given argument is valid accidental.

  Parameters

  • acc: unknown

    Accidental to validate.

  Returns Accidental

  • Valid accidental or thorws.

StaticvalidatechromaticClass

• validatechromaticClass(chromaticClass: unknown): number

  Validate if given argument is chromatic class.

  Parameters

  • chromaticClass: unknown

    Chromatic class to validate.

  Returns number

  • Valid chromatic class, or throws.

StaticvalidateChromaticId

• validateChromaticId(chromaticId: unknown): number

  Validate if given argument is chromatic id.

  Parameters

  • chromaticId: unknown

    Chromatic id to validate.

  Returns number

  • Valid chromatic id, or throws.

StaticvalidateDiatonicClass

• validateDiatonicClass(diatonicClass: unknown): number

  Validate if given argument is diatonic class.

  Parameters

  • diatonicClass: unknown

    Diatonic class to validate.

  Returns number

  • Valid diatonic class or throws.

StaticvalidateDiatonicId

• validateDiatonicId(diatonicId: unknown): number

  Validate if given argument is diatonic id.

  Parameters

  • diatonicId: unknown

    Diatonic id to validate.

  Returns number

  • Valid diatonic id or throws.

StaticvalidateNoteLetter

• validateNoteLetter(noteLetter: unknown): NoteLetter

  Validate if given argument if note letter.

  Parameters

  • noteLetter: unknown

    Note letter to validate.

  Returns NoteLetter

  • Valid note letter or throws.

StaticvalidateOctave

• validateOctave(octave: number): number

  Validate if given argument is octave.

  Parameters

  • octave: number

    Octave to validate.

  Returns number

  • Valid octave or throws.