ACTIONSCRIPT 3 Developer’s Guide en

ACTIONSCRIPT 3.0 DEVELOPER’S GUIDE
Working with sound
var mySound:Sound = new Sound();
var sourceSnd:Sound = new Sound();
var urlReq:URLRequest = new URLRequest("test.mp3");
sourceSnd.load(urlReq);
sourceSnd.addEventListener(Event.COMPLETE, loaded);
function loaded(event:Event):void
{
mySound.addEventListener(SampleDataEvent.SAMPLE_DATA, processSound);
mySound.play();
}
function processSound(event:SampleDataEvent):void
{
var bytes:ByteArray = new ByteArray();
sourceSnd.extract(bytes, 8192);
event.data.writeBytes(upOctave(bytes));
}
function upOctave(bytes:ByteArray):ByteArray
{
var returnBytes:ByteArray = new ByteArray();
bytes.position = 0;
while(bytes.bytesAvailable > 0)
{
returnBytes.writeFloat(bytes.readFloat());
returnBytes.writeFloat(bytes.readFloat());
if (bytes.bytesAvailable > 0)
{
bytes.position += 8;
}
}
return returnBytes;
}
Limitations on generated sounds
Flash Player 10 and later, Adobe AIR 1.5 and later
When you use a sampleData event listener with a Sound object, the only other Sound methods that are enabled are
Sound.extract() and Sound.play(). Calling any other methods or properties results in an exception. All methods
and properties of the SoundChannel object are still enabled.
Playing sounds
Flash Player 9 and later, Adobe AIR 1.0 and later
Playing a loaded sound can be as simple as calling the Sound.play() method for a Sound object, as follows:
var snd:Sound = new Sound(new URLRequest("smallSound.mp3"));
snd.play();
When playing back sounds using ActionScript 3.0, you can perform the following operations:
Play a sound from a specific starting position
Pause a sound and resume playback from the same position later
Last updated 6/6/2012
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