var sprMain:Sprite = new Sprite();
this.addChild(sprMain);

var s:Sound = new Sound();
s.load(new URLRequest("loop.mp3"));

var sc:SoundChannel;
sc = s.play(0, 1000);

var ba:ByteArray = new ByteArray();

var bmp:BitmapData = new BitmapData(800, 800, false, 0x000000);
var bmp2:BitmapData = new BitmapData(800, 800, true, 0x00000000);

this.addChild(new Bitmap(bmp));

var blur:BlurFilter = new BlurFilter ( 2, 2, 3 );

var aColors:Array = [0x00FF00, 0xFF0000];
var aAlpha:Array = [100, 100];
var aRatios:Array = [0, 255];
var matrix:Matrix = new Matrix();
matrix.createGradientBox ( 850, 1, 0, 0, 0);

var nb:Number = 0;

this.addEventListener(Event.ENTER_FRAME, showAmplitude);

function showAmplitude(eventArgs:Event) {	
	SoundMixer.computeSpectrum(ba,true,0);
	
	sprMain.graphics.clear();
	sprMain.graphics.moveTo(i*3, 200);
	sprMain.graphics.lineStyle(1, 0xFFFFFF, 1);
	sprMain.graphics.lineGradientStyle ( 'linear', aColors, aAlpha, aRatios,
matrix, 'pad', 'linearRGB', 0.1);
	for(var i=0; i < 128; i++) {
		a = ba.readFloat();
		if(i%3 == 0) {
			var n:Number = a;
			var num:Number = a*100;
			sprMain.graphics.lineTo(i*6, 150-num);
		} else {
			n += a;
		}
	}
	
	bmp.draw(sprMain, null, null, "add");
	bmp.applyFilter(bmp, bmp.rect, new Point(0, 0), blur);

	var matrixBmp:Matrix = new Matrix();
	matrixBmp.scale(1.03, 1.03);
	var trans:Number = -(1.03-1)/2;
	matrixBmp.translate(trans*768, trans*100);
	bmp2.draw(bmp, matrixBmp);
	
	bmp.draw(bmp2);
	
}