Created
February 15, 2018 19:10
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Morse Code Audio Example using Web Audio API
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<!DOCTYPE html> | |
<html> | |
<meta charset="utf-8"/> | |
<head> | |
</head> | |
<body> | |
<button onclick="morseSounds();">Sound</button> | |
<script> | |
var context = null; | |
function playSound(start, stop){ | |
osc = context.createOscillator(); | |
osc.connect(context.destination); | |
console.log("starting"); | |
osc.start(start); | |
console.log("stopping"); | |
osc.stop(stop); | |
} | |
function morseSounds(){ | |
var text = '-.-.'; | |
var dot = 0.1; | |
var dash = 0.3; | |
var sep = 0.5; | |
var AudioContext = window.AudioContext || window.webkitAudioContext; | |
if (context == null){ | |
context = new AudioContext(); | |
} | |
var osc; | |
now = context.currentTime; | |
for(var i=0; i<text.length; i++){ | |
now = now+sep; | |
if (text[i] === '-'){ | |
console.log(text[i]); | |
playSound(now, now + dash); | |
} | |
else{ | |
console.log(text[i]); | |
playSound(now, now + dot); | |
} | |
} | |
} | |
</script> | |
</body> | |
</html> |
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