440Hzの音を出す

WebAudioAPIで簡単に音を出せる

code:audio.js

const ctx = new AudioContext();

let oscillator = ctx.createOscillator();

// oscillator.type = "sine";

// oscillator.frequency.setValueAtTime(440,0)

oscillator.connect(ctx.destination);

oscillator.start();

ctx = new AudioContext(); oscillator = ctx.createOscillator(); oscillator.connect(ctx.destination); oscillator.start();