<div style="height:1px; margin-left: 140px">
<audio controls id="myAudio">
<source id="///" src="audio/33.mp3" type="audio/mp3">
</audio>
<script type="text/javascript">
document.addEventListener('scroll', function(){
var audio = document.getElementById("myAudio");
audio.play();
});
</script>
</div>