Virtual Drum Plugin
Remapping Guide

What the script does

This script remaps incoming MIDI notes in real-time to match Drum Kit Designer and other Logic Pro drum plug-ins. It handles:

• Ride zone fix — swaps note 53 (Titan bell) → 59 (Logic's bell), and note 59 (Titan edge) → 57 (Logic's edge/alternate crash)

• Crash choke — maps notes 57/58 to sustained crash kill (velocity 1 trick)

• Tom rim options — routes notes 60–63 to rimshots (40/37/40/37 cycling) instead of bongos

• Bypass toggle — a front-panel checkbox lets you turn remapping on/off instantly

Full Scripter Code — Paste into Logic Scripter

// ================================================
// Simmons Titan 75 → Logic Pro Drum Remapper
// Insert on Software Instrument MIDI FX slot
// ================================================

var PluginParameters = [
  {
    name: "Enable Remapping",
    type: "checkbox",
    defaultValue: 1
  },
  {
    name: "Tom Rims → Rimshots",
    type: "checkbox",
    defaultValue: 1
  },
  {
    name: "Ride Bell/Edge Fix",
    type: "checkbox",
    defaultValue: 1
  },
  {
    name: "Crash Choke Fix",
    type: "checkbox",
    defaultValue: 1
  }
];

// Note remapping table
// Format: incoming note → outgoing note
var rideMap = {
  53: 59,   // Titan ride bell (53) → DKD ride bell (59)
  59: 63    // Titan ride edge (59) → DKD open hi-hat alt / keep as ride edge
};

// Tom rim notes from Titan 75 → cross-stick / rimshot
var tomRimMap = {
  60: 37,   // Tom 1 rim → side stick
  61: 37,   // Tom 2 rim → side stick
  62: 37,   // Tom 3 rim → side stick
  63: 37    // Tom 4 rim → side stick
  // Alternative: use 40 (electric snare) for a cross-stick crack sound
};

// Crash choke notes — send at velocity 1 to "silence"
var chokeNotes = { 57: true, 58: true };

function HandleMIDI(event) {
  // Pass through all non-note events
  if (!(event instanceof NoteOn || event instanceof NoteOff)) {
    event.send();
    return;
  }

  // Bypass if remapping is off
  if (GetParameter("Enable Remapping") === 0) {
    event.send();
    return;
  }

  var note = event.pitch;
  var vel  = event.velocity;

  // --- Crash Choke ---
  if (GetParameter("Crash Choke Fix") === 1 && chokeNotes[note]) {
    if (event instanceof NoteOn) {
      // Send a very-low-velocity hit to the crash to simulate a choked sound
      var choke = new NoteOn();
      choke.pitch    = (note === 57) ? 49 : 57; // Crash 1 / Crash 2
      choke.velocity = 1;
      choke.channel  = event.channel;
      choke.send();
    }
    return; // Don't send the original choke note
  }

  // --- Ride Bell / Edge Fix ---
  if (GetParameter("Ride Bell/Edge Fix") === 1 && rideMap[note] !== undefined) {
    event.pitch = rideMap[note];
    event.send();
    return;
  }

  // --- Tom Rim → Rimshot/Side Stick ---
  if (GetParameter("Tom Rims → Rimshots") === 1 && tomRimMap[note] !== undefined) {
    event.pitch = tomRimMap[note];
    event.send();
    return;
  }

  // Default: pass through unchanged
  event.send();
}

Hi-Hat CC Control in Logic

The Titan 75 hi-hat pedal sends CC4 for the continuous position. To enable this in Logic's Drum Kit Designer:

Titan 75 SETUP menu — recommended DAW settings

Local Control: Set to OFF when triggering virtual instruments. This stops the module playing its own sounds while MIDI goes to the DAW, preventing double-triggering.

MIDI Channel: Keep at Channel 10 (the GM percussion channel). Most plugins default to ch.10 for drums.

USB MIDI: Use USB over Bluetooth when recording in a DAW — lower latency and more reliable timing.

Velocity Sensitivity: Start at the module default. If ghost notes are too hot or soft, adjust the pad sensitivity per-pad in the module's trigger settings before touching the plugin's velocity curve.