gold_coin_krugerrand_oscilations_generator.js

// gold coin (krugerrand) oscilations generator

let context = new (window.AudioContext || window.webkitAudioContext)();
[4823, 10852, 18540].map(freq => {
let osc = context.createOscillator(); // instantiate an oscillator
  osc.type = 'sine'; // this is the default - also square, sawtooth, triangle
  osc.frequency.value = freq;
  osc.connect(context.destination); // connect it to the destination
  osc.start(); // start the oscillator
  osc.stop(context.currentTime + 2); // stop 2 seconds after the current time
});