Quickly mapping V-Drums to a note

[kotrl]

When using drum libraries that span several octaves, does anybody have a workflow for quickly mapping either drum pads or V-Drums to the sounds they want?

Reconfiguring the drums MIDI output each time is usually a hassle, so I was wondering if a MIDI transform script was the best way to do this on the fly? Or am I looking at this the wrong way?

[kotrl]

After playing with the stock Logic scripts and complaining to ChatGPT for a while I've cobbled together the beginnings of a script. For some reason the note numbers I thought the drums corresponded to didn't add up.

var NOTES = MIDI._noteNames;

var Snare = 38; // D1
var Tom1 = 36; // C2
var Tom2 = 33; // A1
var Tom3 = 31; // G1
var Kick = 24; // C1

//create numbered MIDI CC names, with added "-- Off --" option
var MIDI_CC_NAMES = ["-- Off --"];
for (var i = 0; i < MIDI._ccNames.length; i++) {
  MIDI_CC_NAMES.push(i + " - " + MIDI._ccNames[i]);
}

var PluginParameters = [
  {
    name: "Snare",
    type: "menu",
    valueStrings: NOTES,
    numberOfSteps: 127,
    defaultValue: Snare
  },
  {
    name: "Tom 1",
    type: "menu",
    valueStrings: NOTES,
    numberOfSteps: 127,
    defaultValue: Tom1
  },
  {
    name: "Tom 2",
    type: "menu",
    valueStrings: NOTES,
    numberOfSteps: 127,
    defaultValue: Tom2
  },
  {
    name: "Tom 3",
    type: "menu",
    valueStrings: NOTES,
    numberOfSteps: 127,
    defaultValue: Tom3
  },
  {
    name: "Kick Drum",
    type: "menu",
    valueStrings: NOTES,
    numberOfSteps: 127,
    defaultValue: Kick
  }
];


function HandleMIDI(event) {
  if (event instanceof NoteOn) {
    switch (event.pitch) {
      case 38: // D1 (Snare)
        event.pitch = Snare;
        break;
      case 48: // C2 (Tom 1)
        event.pitch = Tom1;
        break;
      case 47: // A1 (Tom 2)
        event.pitch = Tom2;
        break;
      case 45: // G1 (Tom 3)
        event.pitch = Tom3;
        break;
      case 36: // C1 (Kick Drum)
        event.pitch = Kick;
        break;
    }

    event.send();

    // Create and send NoteOff event
    var off = new NoteOff(event);
    off.sendAfterMilliseconds(100);
  }
}



function ParameterChanged(param, value) {
  switch (param) {
    case 0: // Snare
      Snare = value;
      break;
    case 1: // Tom 1
      Tom1 = value;
      break;
    case 2: // Tom 2
      Tom2 = value;
      break;
    case 3: // Tom 3
      Tom3 = value;
      break;
    case 4: // Kick Drum
      Kick = value;
      break;
  }
}

                                         

 

[des99]

The traditional, old-school way was using the Mapped Instrument object type, which can remap individual notes to other notes, or even other instruments.

The script will work though, too. 🙂