audio-test-3

audio3.js

var ctx = new AudioContext();
var osc = ctx.createOscillator();
var freqs = [261.63, 293.67, 329.63, 349.23, 392.00, 440.00, 493.88, 523.23];
var freqIdx = 0;
var timerId = setInterval(function () {
    if (freqIdx >= freqs.length) {
        clearInterval(timerId);
        return;
    }
    console.log(freqs[freqIdx]);
    osc.frequency.value = freqs[freqIdx]; // set frequency
    if (freqIdx === 0) {
        osc.start(0);
        osc.stop(ctx.currentTime + freqs.length * 1);
    }
    freqIdx++;
}, 1000);
osc.connect(ctx.destination);