Hello,

I have a M-Audio controller keyboard, I am looking for a sample code that to play any note/key input on selected instruments sounds set (e.g: 3-Electric Grand Piano, 25-Acoustic Nylon Guitar, ... where 3, 25 are General MIDI instrument codes number).
I did a lot of research and tried several examples but no luck.....

Below are one of example I tried, but no luck, your guide, help would be greatly appreciated.
Thank you.
Vu.

//var context = new AudioContext(),
// oscillators = {};

//if (navigator.requestMIDIAccess) {
// navigator.requestMIDIAccess()
// .then(success, failure);
//}

//function success(midi) {
// var inputs = midi.inputs.values();
// // inputs is an Iterator

// for (var input = inputs.next() ; input && !input.done; input = inputs.next()) {
// // each time there is a midi message call the onMIDIMessage function
// input.value.onmidimessage = onMIDIMessage;
// }
//}

//function failure() {
// console.error('No access to your midi devices.')
//}

//function onMIDIMessage(message) {
// var frequency = midiNoteToFrequency(message.data[1]);
// if (message.data[0] === 144 && message.data[2] > 0) {
// playNote(frequency);
// }

// if (message.data[0] === 128 || message.data[2] === 0) {
// stopNote(frequency);
// }
//}

//function midiNoteToFrequency(note) {
// return Math.pow(2, ((note - 69) / 12)) * 440;
//}

//function playNote(frequency) {
// oscillators[frequency] = context.createOscillator();
// oscillators[frequency].frequency.value = frequency;
// oscillators[frequency].connect(context.destination);
// oscillators[frequency].start(context.currentTime);
//}

//function stopNote(frequency) {
// oscillators[frequency].stop(context.currentTime);
// oscillators[frequency].disconnect();
//}