gpt_synth_4.js

async function play_notes(notes) {
    for (const note of notes) {
        await play_note(note);
    }
}

function play_note({ note, octave, duration }) {
    return new Promise((resolve) => {
        // Play the note for the duration
        if (note != null && octave != null) {
            const freq = noteFreq[octave][note];
            // playTone brought to you by Mozilla
            const oscillator = playTone(freq);

            setTimeout(() => {
                oscillator.stop();
                resolve();
            }, duration);
        // Pause for the duration
        } else {
            setTimeout(() => {
                resolve();
            }, duration);
        }
    });
}