/ Examples / MusicAPI / FirstJS

Here's the simplest example of combining JavaScript with our musicAPI. The example relies on the presence of Vital on your system. You can modify your script to employ any CLAP synth in your kit including Hz.Syntho, Hz.Samplo or FluidSynth.

The Code

let ascene = await Ascene.BeginFiber(this);
let id = `t${this.GetId()}:`;
console.log(`${id} Audio scene is ready to go.`);

let noteDur = ascene.Seconds(.05 + .2 * Math.random());
let synth = "Vital"; // "Hz.Syntho", "FluidSynth", "Hz.Samplo"
console.log(`${id} using ${synth} -------------`);
let inst = ascene.NewAnode(synth);
let dac = ascene.GetDAC();
ascene.Connect(inst, dac);
await ascene.Sync();
for(let j=0;j<10;j++)
{
    console.log(`${id}loop ${j}`);
    for(let key=45; key<=65;key++)
    {
        inst.NoteOn(key, .8);
        await ascene.Wait(noteDur);
        inst.NoteOff(key, .8);
        yield;
    }
}
console.log(`${id}done!`);

More Examples

We've included a few additional small examples in the firstjs subdirectory for your perusal. Some of them may assume the presence of a MIDI input device or one or multiple third-party CLAP plugins.

• fluidVoices.js - play notes in each of FluidSynth's 128 programs.
• fluidMidi.js - shows how to read MIDI input and play notes (requires MIDI keyboard).