例一

import flash.filters.*;
var blur:BlurFilter = new BlurFilter(blurX, blurY, 1);
var num = 10;
for (var i = 0; i<num; i++) {
scale = random(300);
alpha = random(10000/scale)+30;
var temp_mc = _root.createEmptyMovieClip("ball"+i, this.getNextHighestDepth());
temp_mc.createTextField("my_txt", 1, 0, 0, 300, 100);
temp_mc.my_txt.multiline = true;
temp_mc.my_txt.wordWrap = true;
temp_mc.my_txt.text = "feige05.icpcn.com";
var my_fmt:TextFormat = new TextFormat();
my_fmt.color = 0xFF6600;
my_fmt.size = 20;
my_fmt.font = "BM bug";
temp_mc.my_txt.setTextFormat(my_fmt);
with (temp_mc) {
_x = random(Stage.width);
_y = random(Stage.height);
_xscale = scale;
_yscale = scale;
_alpha = alpha;
}
temp_mc.onEnterFrame = function() {
Yspeed = (Stage.height/2-_ymouse)/this._yscale*12;
Xspeed = (Stage.width/2-_xmouse)/this._xscale*12;
blur.blurX = Math.abs(Xspeed);
blur.blurY = Math.abs(Yspeed);
this.filters = [blur];
this._y += Yspeed;
if (this._y>Stage.height) {
   this._y = 0;
}
if (this._y<0) {
   this._y = Stage.height;
}
this._x += Xspeed;
if (this._x>Stage.width) {
   this._x = 0;
}
if (this._x<0) {
   this._x = Stage.width;
}
};
}

例二

import flash.filters.BlurFilter;
var rect:MovieClip = createRectangle(100, 100, 0x003366, "BlurFilterExample");

var blurX:Number = 10;
var blurY:Number = 10;
var quality:Number = 2;

var filter:BlurFilter = new BlurFilter(blurX, blurY, quality);
var filterArray:Array = new Array();
filterArray.push(filter);
rect.filters = filterArray;
ts.filters =[filter];
function createRectangle(w:Number, h:Number, bgColor:Number, name:String):MovieClip {
    var mc:MovieClip = this.createEmptyMovieClip(name, this.getNextHighestDepth());
    mc.beginFill(bgColor);
    mc.lineTo(w, 0);
    mc.lineTo(w, h);
    mc.lineTo(0, h);
    mc.lineTo(0, 0);
    mc._x = 20;
    mc._y = 20;
    return mc;
}

filter.blurY/X可以分别调整

调用filter要用数组方式.