how to play 8000hz wav audio

[guoyuanbing]

i want to paly 8khz wav audio,but not work , for exmaple:

             var d:ByteArray=new ByteArray();

	  WaveFile.writeBytesToWavFile(d,content,8000,1,16);
	  d.position=0;
	  
	  var audioSource:IAudioSource=WaveFile.createSample(d);
	  
	 var s:StandardizeFilter =new StandardizeFilter(audioSource);

	  player.play(s);