Edit fiddle - JSFiddle - React, Tailwind, and code Playground

JSFiddle - React, Tailwind, and code Playground

JavaScript

let audioCtx = new AudioContext();

let fundamental = audioCtx.createOscillator();
let overtone1 = audioCtx.createOscillator();
let overtone2 = audioCtx.createOscillator();
let overtone3 = audioCtx.createOscillator();

let overtone1Gain = audioCtx.createGain();
let overtone2Gain = audioCtx.createGain();
let overtone3Gain = audioCtx.createGain();
let masterGain = audioCtx.createGain();

fundamental.frequency.value = 440;
overtone1.frequency.value = 880;
overtone2.frequency.value = 1320;
overtone3.frequency.value = 1760;

overtone1Gain.gain.value = 0.1;
overtone2Gain.gain.value = 0.2;
overtone3Gain.gain.value = 0.5
masterGain.gain.value = 0.3;

fundamental.connect(masterGain);
overtone1.connect(overtone1Gain);
overtone2.connect(overtone2Gain);
overtone3.connect(overtone3Gain);
overtone1Gain.connect(masterGain);
overtone2Gain.connect(masterGain);
overtone3Gain.connect(masterGain);
masterGain.connect(audioCtx.destination);

fundamental.start(0);
overtone1.start(0);
overtone2.start(0);
overtone3.start(0);

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JSFiddle - React, Tailwind, and code Playground

JavaScript

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