Flash / Flex / ActionScript/Development/Sound

Applying Sound Transformations

   <source lang="java">

package {

   import flash.display.*;
   import flash.media.*;
   import flash.events.*;
   import flash.net.*;
   import flash.text.*;
   public class Main extends Sprite {
       private var _id3Display:TextField = new TextField();
       private static const SONG_URL:String ="http://www.wbex.ru/y.mp3";
       public function Main () {
           _id3Display.width = 300;
           _id3Display.height = 400;
           addChild(_id3Display);
           var sound:Sound = new Sound ();
           sound.addEventListener(Event.ID3, onID3);
           sound.load(new URLRequest(SONG_URL));
           sound.play();
       }
       private function onID3(event:Event):void {
           var sound:Sound = event.target as Sound;
           _id3Display.text = sound.id3.songName + "\n";
           _id3Display.appendText("by "+ sound.id3.artist + "\n");
           _id3Display.appendText("from the album "+ sound.id3.album);
       }
   }

}

       </source>
   
  

Buffering a Streaming Sound

   <source lang="java">

package{

   import flash.display.Sprite;
   import flash.media.*;
   import flash.events.*;
   import flash.net.*;
   import flash.text.*;
 public class Main extends Sprite{
   public function Main(){
       var context:SoundLoaderContext = new SoundLoaderContext();
       context.bufferTime = 10000; // set buffer time to 10 seconds.
       var song:Sound = new Sound(new URLRequest("http://losdesigns.ru/music/robotPicksFlowers.mp3"), context);
       song.play();
   }
 }

}

       </source>
   
  

Controlling Playback of a Sound

   <source lang="java">

package{

 import flash.display.Sprite;
     import flash.media.*;
   import flash.events.*;
   import flash.net.*;
   import flash.text.*;
   import flash.utils.*;
 public class Main extends Sprite{
   public function Main(){
       var jazz:Sound = new Sound(new URLRequest("My.mp3"));
       var jazzChannel:SoundChannel = jazz.play(); // sound is playing
       var timer:Timer = new Timer(5000, 1);
       timer.addEventListener(TimerEvent.TIMER, onTimeout);
       timer.start();
       function onTimeout() {
           jazzChannel.stop(); // sound stops playing
       }
   }
 }

}

       </source>
   
  

Getting the Size of a Sound File

   <source lang="java">

//ProgressBar package {

   import flash.display.Sprite;
   import flash.media.Sound;
   import flash.net.URLRequest;
   import flash.events.Event;
   
   public class Main extends Sprite {
       private var _sound:Sound;
       var i:int = 1;
       public function Main(  ) {
           addEventListener(Event.ENTER_FRAME, onEnterFrame);
       }
       
       public function onEnterFrame(event:Event):void
       {
           var barWidth:int = 200;
           var barHeight:int = 5;
           var loaded:int = i++;
           var total:int = 100;
           if(total > 0) {
               graphics.clear(  );
               graphics.beginFill(0xFFFFFF);
               graphics.drawRect(10, 10, barWidth, barHeight);
               graphics.endFill(  );
               var percent:Number = loaded / total;
               graphics.beginFill(0xCCCCCC);
               graphics.drawRect(10, 10, barWidth * percent, barHeight);
               graphics.endFill(  );
           }
       }
   }    

}

       </source>
   
  

How Sound Works in AS3: assume that there is an MP3 file with the name sound.mp3 stored in the same folder as the SWF file.

   <source lang="java">

package{

 import flash.display.Sprite;
     import flash.media.*;
   import flash.events.*;
   import flash.net.*;
   import flash.text.*;
 public class Main extends Sprite{
   public function Main(){
       var sound:Sound = new Sound();
       var url:String = "sound.mp3";
       var urlRequest:URLRequest = new URLRequest(url);
       sound.load(urlRequest);
   }
 }

}

       </source>
   
  

Offsetting the Start of a Sound

   <source lang="java">

package {

   import flash.display.Sprite;
   import flash.media.Sound;
   import flash.net.URLRequest;
   
   public class Main extends Sprite {
       private var _sound:Sound;
       private var _cuePoints:Array;
       
       public function Main(  ) {
           _cuePoints = [0, 10000, 30000, 68000, 120000];
           _sound = new Sound(new URLRequest("song.mp3"));
           playCuePoint(2);
       }
       
       public function playCuePoint(index:int):void {
           _sound.play(_cuePoints[index]);
       }
       
   }    

}

       </source>
   
  

Pausing and Restarting a Sound

   <source lang="java">

package {

   import flash.display.Sprite;
   import flash.media.Sound;
   import flash.media.SoundChannel;
   import flash.net.URLRequest;
   import flash.events.Event;
   import flash.display.Sprite;
   import flash.events.MouseEvent;
   
   public class PlayPause extends Sprite {
       private var _sound:Sound;
       private var _channel:SoundChannel;
       private var _playPauseButton:Sprite;
       private var _playing:Boolean = false;
       private var _position:int;
       
       public function PlayPause(  ) {
           _sound = new Sound(new URLRequest("song.mp3"));
           _channel = _sound.play(  );
           _playing = true;
           _playPauseButton = new Sprite(  );
           addChild(_playPauseButton);
           _playPauseButton.x = 10;
           _playPauseButton.y = 20;
           _playPauseButton.graphics.beginFill(0xcccccc);
           _playPauseButton.graphics.drawRect(0, 0, 20, 20);
           _playPauseButton.addEventListener(MouseEvent.MOUSE_UP, 
                                            onPlayPause);
       }
       
       public function onPlayPause(event:MouseEvent):void {
           if(_playing) {
                  _position = _channel.position;
                  _channel.stop(  );
           }
           else {
               // If not playing, re-start it at
               // last known position
               _channel = _sound.play(_position);
           }
              _playing = !_playing;
       }
   }

}

       </source>
   
  

Reading the Sound Spectrum

   <source lang="java">

package {

   import flash.display.Bitmap;
   import flash.display.BitmapData;
   import flash.display.Sprite;
   import flash.events.Event;
   import flash.media.Sound;
   import flash.media.SoundChannel;
   import flash.net.URLRequest;
   import flash.utils.ByteArray;
   
       
   public class Main extends Sprite {
       private var _sound:Sound;
       private var _channel:SoundChannel;
       public function Main(  ) {
           addEventListener(Event.ENTER_FRAME, onEnterFrame);
           _sound = new Sound(new URLRequest("song.mp3"));
           _channel = _sound.play(  );
       }
       
       public function onEnterFrame(event:Event):void
       {
           var spectrum:ByteArray = new ByteArray(  );
           flash.media.SoundMixer.ruputeSpectrum(spectrum);
           
          
           for(var i:int=0;i<256;i++) {
               trace(spectrum.readFloat());
           }
           
       }       
   }

}

       </source>