MIDI.md

Sending MIDI Messages

You can send MIDI Note On, Note Off, and CC messages into your RNBO Plugin, and use MIDI to take advantage of RNBO's default polyphonic voice management in Unity.

The following example, which uses a Plugin called FeedbackPolyphonyGroup, schedules a note on and note off event for a random pitch in the range of MIDI note 40 to 100 whenever the user presses the "Q" key. It also sends the MIDI controller number 1 the value 110 when the script is first loaded.

using UnityEngine;

public class SendMIDI : MonoBehaviour
{
    FeedbackPolyphonyGroupHelper helper;

    const int instanceIndex = 1;
    
    void Start()
    {
        helper = FeedbackPolyphonyGroupHelper.FindById(instanceIndex);

        // MIDI channel 1, controller number 1, value 110
        helper.Plugin.SendMIDICC(1, 1, 110);
    }

    void Update()
    {
        if (Input.GetKeyDown(KeyCode.Q))
        {
            byte pitch = (byte)Random.Range(40, 100);

            // uses the Plugin's `Now` property to define a time to send the MIDI note on message
            double startTime = helper.Plugin.Now + 0.01;

            // MIDI channel 1, sends `pitch` with a velocity of 127 at the `startTime` defined above
            helper.Plugin.SendMIDINoteOn(1, pitch, 127, startTime);
            // schedules the note off event for 200ms after the note on event
            helper.Plugin.SendMIDINoteOff(1, pitch, 0, startTime + 200);
        }
    }
}

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