flash as3 加载音乐并显示频谱

//加载网络音乐 并显示频谱////这个例子是加载外部的文件,本例为音乐文件，注意load方法只能接受URLRequest文件//加载网络音乐 并显示频谱////这个例子是加载外部的文件,本例为音乐文件，注意load方法只能接受URLRequest文件var request:URLRequest=new URLRequest("http://www.wangzi.net/kissrain.mp3");//定义一个loadervar loader:Loader = new Loader();//为加载过程建立事件侦听器loader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, loadProgress);//加载完成的事件侦听器loader.contentLoaderInfo.addEventListener(Event.COMPLETE, loadComplete);//加载过程中执行function loadProgress(event:ProgressEvent):void {var percentLoaded:Number=event.bytesLoaded/event.bytesTotal;percentLoaded=Math.round(percentLoaded*100);txt.text="音乐已缓冲 "+percentLoaded+"%"+"";}//加载完成后执行function loadComplete(event:Event):void {trace("Complete");}//载入loader.load(request);//放置在场景中var shengyin:Sound=new Sound();//用load方法把dizhi加载进来shengyin.load(request);//控制声音：播放shengyin.play();var _sound:Sound=new Sound();var _channel:SoundChannel=new SoundChannel();var url:String="http://www.wangzi.net/kissrain.mp3";var _request:URLRequest = new URLRequest(url);_sound.load(_request);_channel=_sound.play();var bxzr:Sprite=new Sprite();addChildAt(bxzr,1);var bx:Sprite=new Sprite();bxzr.addChild(bx);var byteArray:ByteArray = new ByteArray();var n:Number=10;addEventListener(Event.ENTER_FRAME,yx);function yx(event:Event):void { bx.graphics.clear(); SoundMixer.computeSpectrum(byteArray,true,1);//将当前声音输出为ByteArray for (var i=0; i <200; i=i+5) {  n = byteArray.readFloat()*60;//把数据流读取成浮点数并扩大其值  bx.graphics.lineStyle(3,0xFFFFFF,1,true,"noSacle","none");  bx.graphics.moveTo(27+i,50);    bx.graphics.lineTo(27+i,50-n)    bx.graphics.lineStyle(3,0xFFFFFF,0.2,true,"noSacle","none");  bx.graphics.lineTo(27+i,50+n); }}////////////////////////////////////////////////////////////////////////////////////////另一种频谱效果import flash.display.Graphics;import flash.events.Event;import flash.media.Sound;import flash.media.SoundChannel;import flash.media.SoundMixer;import flash.net.URLRequest;const PLOT_HEIGHT:int=200;const CHANNEL_LENGTH:int=256;var snd:Sound = new Sound();var req:URLRequest=new URLRequest("http://www.wangzi.net/kissrain.mp3");snd.load(req);var channel:SoundChannel;channel=snd.play();addEventListener(Event.ENTER_FRAME, onEnterFrame);snd.addEventListener(Event.SOUND_COMPLETE, onPlaybackComplete);var bytes:ByteArray = new ByteArray();function onEnterFrame(event:Event):void {SoundMixer.computeSpectrum(bytes, false, 0);var g:Graphics=this.graphics;g.clear();g.lineStyle(0, 0xFF0000);g.beginFill(0xFF0000);g.moveTo(0, PLOT_HEIGHT);var n:Number=0;// left channelfor (var i:int = 0; i < CHANNEL_LENGTH; i++) {n = (bytes.readFloat() * PLOT_HEIGHT);g.lineTo(i * 2, PLOT_HEIGHT - n);}g.lineTo(CHANNEL_LENGTH * 2, PLOT_HEIGHT);g.endFill();// right channelg.lineStyle(0, 0xCC0066);g.beginFill(0xCC0066, 0.5);g.moveTo(CHANNEL_LENGTH * 2, PLOT_HEIGHT);for (i = CHANNEL_LENGTH; i > 0; i--) {n = (bytes.readFloat() * PLOT_HEIGHT);g.lineTo(i * 2, PLOT_HEIGHT - n);}g.lineTo(0, PLOT_HEIGHT);g.endFill();}function onPlaybackComplete(event:Event) {removeEventListener(Event.ENTER_FRAME, onEnterFrame);}

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1 楼 ddjunshuhong 2012-05-29 楼主可能发个全点的代码呢？