sound.extract() method undefined

Hello kglad,

  Source for the example is below. It is from bytearray.org - "Rendering spectrums with Sound.extract()"

var sound:Sound = new Sound();

var samples:ByteArray = new ByteArray();

var buffer:BitmapData = new BitmapData(1024,512,false,0);

var cursorBuffer:BitmapData = new BitmapData(1024,512,true,0);

var selectBuffer:BitmapData = new BitmapData(1024,512,true,0);

var selectScreen:Bitmap = new Bitmap(selectBuffer);

var cursorScreen:Bitmap = new Bitmap(cursorBuffer);

var screen:Bitmap = new Bitmap(buffer);

addChild( screen );

addChild( cursorScreen );

addChild( selectScreen );

var label:TextField = new TextField ();

label.defaultTextFormat = new TextFormat ( "Verdana", 10, 0xFFFFFF );

label.autoSize = TextFieldAutoSize.LEFT;

label.text = "simple as3 waveform with Sound.extract() - select any area to loop";

addChild ( label );

var rect:Rectangle = new Rectangle(0,0,1,0);

var playingTime:int;

var ratio:Number;

var step:int;

var zone:Rectangle = new Rectangle(0,0,1,512);

var selectionRect:Rectangle = new Rectangle(0,0,0,1024);

var clickedPosition:int;

var looper:Timer = new Timer(0,0);

looper.addEventListener( TimerEvent.TIMER, onTime );

function scrollIt( e:Event ):void

{

cursorBuffer.fillRect( cursorBuffer.rect,0 );

zone.x = (buffer.width / playingTime) * channel.position;

cursorBuffer.fillRect( zone , 0xFF990000 ); 

}

function loadComplete(event:Event):void

{

buffer.fillRect( buffer.rect, 0 );

var extract:Number = Math.floor ((sound.length/1000)*44100);

playingTime = sound.length;

ratio = playingTime / buffer.width;

var lng:Number = sound.extract(samples,extract);

stage.addEventListener( Event.ENTER_FRAME, scrollIt );

samples.position = 0;

step = samples.length/4096;

do step-- while ( step % 4 );

var left:Number;

var right:Number;

for (var c:int = 0; c < 4096; c++)

{

rect.x = c/4;

left = samples.readFloat()*128;

right = samples.readFloat()*128;

samples.position = c*step;

if (left>0)

{

rect.y = 128-left;

rect.height = left;

} else

{

rect.y = 128;

rect.height = -left;

}

buffer.fillRect( rect, 0xFFFFFF );

if (right>0)

{

rect.y = 350-right;

rect.height = right;

} else

{

rect.y = 350;

rect.height = -right;

}

buffer.fillRect( rect, 0xFFFFFF );

}

channel = sound.play();

}

stage.addEventListener( MouseEvent.CLICK, onClick );

stage.addEventListener( MouseEvent.MOUSE_DOWN, onMouseIsDown );

function onTime( e:TimerEvent ):void

{

channel.stop();

channel = sound.play( selectionRect.x*ratio );

}

function onMouseIsDown( e:MouseEvent ):void

{

stage.addEventListener( MouseEvent.MOUSE_MOVE, onMove );

selectBuffer.fillRect( selectBuffer.rect, 0 );

clickedPosition = e.stageX;

selectionRect.x = clickedPosition;

selectionRect.width = 0;

}

function onMove( e:MouseEvent ):void

{

if ( e.stageX > clickedPosition )

{

selectionRect.width = e.stageX-clickedPosition;

} else

{

selectionRect.x = e.stageX;

selectionRect.width = Math.abs (e.stageX-clickedPosition);

}

selectBuffer.fillRect( selectionRect, 0x33CCCCCC );

}

function onClick( e:MouseEvent ):void

{

channel.stop();

channel = sound.play( selectionRect.x*ratio );

stage.removeEventListener( MouseEvent.MOUSE_MOVE, onMove );

if (selectionRect.width)

{

looper.delay = ratio*selectionRect.width;

looper.start();

} else looper.stop();

}

sound.addEventListener(Event.COMPLETE, loadComplete);

sound.load(new URLRequest("Sunglasses.mp3"));

var channel:SoundChannel;

Regards,

Nilang