Dec
23
2015

Play Midi Sounds with midi-dot-net dll

An article by mgear

play_midi_note_with_unity

Instructions:
– Download midi-dot-net from https://code.google.com/p/midi-dot-net/ (from downloads section, midi-dot-net_1.1.0.zip)
– Unzip and copy “Midi.dll” into your unity project folder, Assets/Plugins/
– Create c# script and use the source below for testing
– Attach the script to gameobject in scene and hit play, should hear 1 note sound
– See the midi-dot-net examples & API for more info

Note:
– This library doesn’t support loading MIDI files!
– (probably works in Windows only)

Source:

	// usage: copy Midi.dll to Assets/Plugins/ folder
	// Get it from https://code.google.com/p/midi-dot-net/

	using UnityEngine;
	using System.Collections;
	using Midi; // needs this

	public class MidiSound : MonoBehaviour
	{
	OutputDevice outputDevice;

	void Start ()
	{
	outputDevice = OutputDevice.InstalledDevices[0];
	if (outputDevice.IsOpen) outputDevice.Close();
	if (!outputDevice.IsOpen) outputDevice.Open();

	// play note
	outputDevice.SendNoteOn(Channel.Channel1, Pitch.C4, 80); // Middle C, velocity 80
	outputDevice.SendPitchBend(Channel.Channel1, 7000); // 8192 is centered, so 7000 is bent down
	}

	void OnDestroy ()
	{
	if (outputDevice != null && outputDevice.IsOpen) outputDevice.Close();
	}

	void OnDisable ()
	{
	if (outputDevice != null && outputDevice.IsOpen) outputDevice.Close();
	}

	}