Flex Tone Generator Helper Class

package {
    import flash.events.SampleDataEvent;
    import flash.media.Sound;

    public class ToneGenerator {

        [Bindable]
        public var amp_multiplier_right:Number = 0.15;
        [Bindable]
        public var amp_multiplier_left:Number = 0.15;
        [Bindable]
        public var freq_right:Number = 350;
        [Bindable]
        public var freq_left:Number = 350;

        public static const SAMPLING_RATE:int = 44100;
        public static const TWO_PI:Number = 2*Math.PI;
        public static const TWO_PI_OVER_SR:Number = TWO_PI/SAMPLING_RATE;

        public var tone:Sound;

        public function ToneGenerator() {
        }

        public function stopTone():void {

            tone.removeEventListener(SampleDataEvent.SAMPLE_DATA, generateSineTone);

        }

        public function startTone():void {

            tone = new Sound();

            tone.addEventListener(SampleDataEvent.SAMPLE_DATA, generateSineTone);

            tone.play();

        }

        public function generateSineTone(e:SampleDataEvent):void {

            var sample:Number;

            for(var i:int=0;i<8192;i++) {
                sample = Math.sin((i+e.position) * TWO_PI_OVER_SR * freq_left);
                e.data.writeFloat(sample * amp_multiplier_left);
                sample = Math.sin((i+e.position) * TWO_PI_OVER_SR * freq_right);
                e.data.writeFloat(sample * amp_multiplier_right);
            }

        }


    }
}