Support for pitch bending, vibrato

[Tails]

Does the library support pitch bends and vibrato? (small and large?)

[dingram]

Not explicitly.

For pitch bends you could probably do something like:

myTrack.events.push(new Midi.MidiEvent({
  type: Midi.MidiEvent.PITCH_BEND,
  channel: channel, // e.g. 0
  param1: lowerPitchbendBits(bend),
  param2: upperPitchbendBits(bend),
  time: time, // time since previous event
})

Then the other two *Bits functions would be something like (UNTESTED!):

var lowerPitchbendBits = function(b) { return (b) & 0x7F; }
var upperPitchbendBits = function(b) { return (b >> 7) & 0x7F; }

See the "Pitch Bend Change" command in (for example) http://www.midi.org/techspecs/midimessages.php

Similarly for vibrato:

myTrack.events.push(new Midi.MidiEvent({
  type: Midi.MidiEvent.CONTROLLER,
  channel: channel, // e.g. 0
  param1: 76, // vibrato rate
  param2: vibrato_rate, // 0-127
  time: time, // time since previous event
})
myTrack.events.push(new Midi.MidiEvent({
  type: Midi.MidiEvent.CONTROLLER,
  channel: channel, // e.g. 0
  param1: 77, // vibrato depth
  param2: vibrato_depth, // 0-127
  time: time, // time since previous event
})
myTrack.events.push(new Midi.MidiEvent({
  type: Midi.MidiEvent.CONTROLLER,
  channel: channel, // e.g. 0
  param1: 78, // vibrato delay
  param2: vibrato_delay, // 0-127
  time: time, // time since previous event
})

Of course, I have no idea what these values actually mean 😀

Pull requests welcome 😉

[Tails]

Thanks, i'll be experimenting with it in the coming days. I'll make a pull request if anything proper comes out of it.

[dingram]

Thanks, that would be awesome 😄