Working with Sound

Syntax#

Sound.play(startTime:Number = 0, loops:int = 0, sndTransform:flash.media:SoundTransform = null):SoundChannel // Plays a loaded sound, returns a SoundChannel

Stop Playing a Sound

import flash.net.URLRequest;
import flash.media.Sound;
import flash.media.SoundChannel;
import flash.events.Event;

var snd:Sound; = new Sound();
var sndChannel:SoundChannel
var sndTimer:Timer;

snd.addEventListener(Event.COMPLETE, soundLoaded);
snd.load(new URLRequest("soundFile.mp3")); //load after adding the complete event

function soundLoaded(e:Event):void 
{
    sndChannel = snd.play();

    //Create a timer to wait 1 second
    sndTimer = new Timer(1000, 1);
    sndTimer.addEventListener(TimerEvent.TIMER, stopSound, false, 0, true);
    sndTimer.start();
}

function stopSound(e:Event = null):void {
    sndChannel.stop(); //Stop the sound
}

Infinite looping a sound

import flash.net.URLRequest;
import flash.media.Sound;
import flash.events.Event;

var req:URLRequest = new URLRequest("filename.mp3"); 
var snd:Sound = new Sound(req);

snd.addEventListener(Event.COMPLETE, function(e: Event)
{
    snd.play(0, int.MAX_VALUE); // There is no way to put "infinite"
}

You also don’t need to wait for sound to load before calling play() function. So this will do the same job:

snd = new Sound(new URLRequest("filename.mp3"));
snd.play(0, int.MAX_VALUE);

And if you really want to loop sound inifinite time for some reason (int.MAX_VALUE will loop 1s sound for about 68 years, not counting the pause an mp3 causes…) you can write something like this:

var st:SoundChannel = snd.play();
st.addEventListener(Event.SOUND_COMPLETE, repeat);
function repeat(e:Event) { 
    st.removeEventListener(Event.SOUND_COMPLETE, repeat);
    (st = snd.play()).addEventListener(Event.SOUND_COMPLETE, repeat);
}

play() function returns new instance of SoundChannel object each time it’s called. We assgin it to variable and listen for its SOUND_COMPLETE event. In the event callback, listener is removed from current SoundChannel object and new one is created for new SoundChannel object.

Load and play an external sound

import flash.net.URLRequest;
import flash.media.Sound;
import flash.events.Event;

var req:URLRequest = new URLRequest("click.mp3"); 
var snd:Sound = new Sound(req);

snd.addEventListener(Event.COMPLETE, function(e: Event)
{
    snd.play();
}