JS1k: The JavaScript code golfing competition

counter=offset=y=1;c.width=w=window.innerWidth;c.height=h=window.innerHeight;math=Math;x="888,B8,B8TTTYB5,B8";duration=[4,4,4,2,1,4,2,1,4];for(sound=[],i=18;i--;)
for(k=l=duration[i%9]*11025;k--;)
sound[i]=sound[i]+String.fromCharCode(math.sin(x.charCodeAt(i%18)*k/1e3)*math.min(math.sqrt(l-k)/9,k/l)*99+128);p=new Audio;lastBeepIndex=-1;setInterval(function(){a.fillStyle='rgba(0,0,0,0.6)';a.fillRect(0,0,w,h);for(n=0;n<18;n++){i=(h/3+n*h/31)/2;x=i*math.cos(counter+offset)+w/2;y=i*math.sin(counter+offset)+h/2;r=30*math.sin(counter)+50;fs='hsl('+2*i+','+r*2+'%,50%)';a.fillStyle=fs;a.fillText('•',x,y);offset-=0.3;if(lastBeepIndex!=n&&x>w/2&&y%(h/2)<10){lastBeepIndex=n;a.strokeStyle=fs;p.src='data:audio/wav;base64,UklGRqSIFQBXQVZFZm10IBAAAAABAAEARKwAAESsAAABAAgAZGF0YYCI'+btoa(' \0'+sound[n])
p.play();};};a.beginPath();a.moveTo(w/2,h/2);a.lineTo(w,h/2);a.stroke();offset=-2;counter+=.02;},30);

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