Class processing eficiency in playing a sound

Hello,

I would like to ask you what you think of the efficiency of the AS3 class below. I needed to produce a beeping sound  and I acquired this class from somewhere. The thing is: there´s a loop of 8192 iterations and I have no Idea if that consumes more processing power than it´s needed for this simple task! I´m concerned about this because this project is related to milliseconds presentations, and sometimes i feel that the sound flickers a little...

Thanks!

package components
{
	import flash.events.*;
	import flash.media.Sound;
	import flash.media.SoundChannel;
	import flash.utils.Timer;


	public class beep
	{
		private const AMP_MULTIPLIER:Number = 0.15;
		private const BASE_FREQ:int = 440;
		private const SAMPLING_RATE:int = 44100;
		private const TWO_PI:Number = 2 * Math.PI;
		private const TWO_PI_OVER_SR:Number = TWO_PI / SAMPLING_RATE;
		private var barulho:Sound = new Sound();
		private var channel:SoundChannel = new SoundChannel();
		private var msegundos:Number = 500;
		private var dur_som:Timer = new Timer(msegundos,1);//500 milisec



		public function beepNow(mseg:Number):void
		{
			// constructor code
			trace("beep");
			msegundos = mseg;
			barulho.addEventListener(SampleDataEvent.SAMPLE_DATA,sineWave1);
			channel = barulho.play();
			dur_som.addEventListener(TimerEvent.TIMER_COMPLETE, TheEnd);
			dur_som.start();
		}

		private function sineWave1(event:SampleDataEvent):void
		{
			var sample:Number;
			for (var i:int=0; i<8192; i++)
			{
				sample = Math.sin((i+event.position) * TWO_PI_OVER_SR * BASE_FREQ);
				event.data.writeFloat(sample * AMP_MULTIPLIER);
				event.data.writeFloat(sample * AMP_MULTIPLIER);
			}
		}
		private function TheEnd(event:TimerEvent):void
		{
			channel.stop();
			trace("Beep playied" + event.target.currentCount * msegundos + " milisec");
			dur_som.reset();
		}
	}

}

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