intrinsic class Microphone { static var names:Array; static function get(index:Number):Microphone; var gain:Number; var index:Number; var activityLevel:Number; var name:String; var silenceLevel:Number; var silenceTimeOut:Number; var rate:Number; var useEchoSuppression:Boolean; var muted:Boolean; function setSilenceLevel(silenceLevel:Number,timeOut:Number):Void; function setRate(rate:Number):Void; function setGain(gain:Number):Void; function setUseEchoSuppression(useEchoSuppression:Boolean):Void; function onActivity(active:Boolean):Void; function onStatus(infoObject:Object):Void; }