Class MidiOut

constructor

• new MidiOut(output, channels, log?): MidiOut

• Constuct a new wrapper for a webmidi.js output.

  Parameters

  • output: null | Output

    Output device or null if you need a dummy out.
  • channels: Set<number>

    Channels to use for sending pitch bent MIDI notes. Number of channels determines maximum microtonal polyphony.
  • Optional log: ((msg) => void)

    Logging function.

    • • (msg): void

      • Parameters

        • msg: string

        Returns void

  Returns MidiOut

channels

log

output

clear

• clear(): void

• Clear scheduled notes that have not yet been played. Will start working once the Chrome bug is fixed: https://bugs.chromium.org/p/chromium/issues/detail?id=471798

  Returns void

playNotes

• playNotes(notes): void

• Schedule a series of notes to be played at a later time. Please note that this reserves the channels until all notes have finished playing.

  Parameters

  • notes: Note[]

    Notes to be played.

  Returns void

sendNoteOn

• sendNoteOn(frequency, rawAttack?, time?): ((rawRelease?, time?) => void)

• Send a note-on event and pitch-bend to the output device on one of the available channels.

  Parameters

  • frequency: number

    Frequency of the note in Hertz (Hz).
  • Optional rawAttack: number

    Attack velocity of the note from 0 to 127.
  • Optional time: number

  Returns ((rawRelease?, time?) => void)

  A callback for sending a corresponding note off on the correct channel.

  • • (rawRelease?, time?): void

    • Parameters

      • Optional rawRelease: number
      • Optional time: number

      Returns void