Loading sound from an external source (i.e, not embedded in the .swf file) is really easy to do once you know how. I am going to use the same example as i used for the last tutorial but the sound is not going to be embedded in the .swf it is going to be hosted on my site
Here is the example. I have changed the sound to a whole song to demonstrate how quickly it takes to load.
Important!
Before i started i uploaded a .mp3 file to the internet so that i could call it with a URL request in this code.
You will need to do this for this code to work from the internet, alternatively you can put a sound file in the root classpath of your .fla (this is usually the same folder as the .fla).
Another important note
if you are loading a file on the internet change you publish settings for flash to “access network file only” and if you are loading it from a folder change it to “access local files only”.
To do this it was simple. I replaced one line of the old code for three more lines of code.
I replaced the line:
var sound:Sound = new acoust();
with:
var loadsound:URLRequest = new URLRequest(“http://where my mp3 file is on the internet.mp3″);
var sound:Sound = new Sound();
sound.load(loadsound);
Line 1: a new variable called loadsound which requests the file from the url mentioned inside the brackets and the “”
line 2: a variable like before that holds a blank instance of the sound class instead of the class that we made called acoust.
line 3: loading the sound that we got from the internet via the URL request into the blank instance of the sound class that we named earlier.
Note: if you want to load the sound locally from a folder you just replace “http://where my mp3 file is on the internet.mp3″ with “sound name.mp3”
The complete code for ease.
import flash.media.Sound;
var loadsound:URLRequest = new URLRequest(“http://where my mp3 file is on the internet.mp3″);
var sound:Sound = new Sound();
sound.load(loadsound);
var channel:SoundChannel;
var soundisplaying:Boolean = false;
var pausePosition:int = 0;
playbut.addEventListener(MouseEvent.CLICK, playsound);
stopbut.addEventListener(MouseEvent.CLICK, stopsound);
function playsound(event:Event):void {
if (soundisplaying==false) {
channel = sound.play(pausePosition);
soundisplaying = true;
channel.addEventListener(Event.SOUND_COMPLETE, soundComplete);
}
}
function stopsound(event:Event):void {
pausePosition = channel.position;
channel.stop();
soundisplaying =false;
}
function soundComplete(event:Event):void {
channel = sound.play();
channel.addEventListener(Event.SOUND_COMPLETE, soundComplete);
}
Ok this will hopefully help some of you.
i am going away for a week so don’t expect any more posts until i get back!
November 14th, 2008 at 9:30 pm
Thanks for your help! The pause and play work real well. But the loop glitches when it comes back around… I’m still looking for a solution to this.
As a test play a sound loop like this:
var sound = new loopedsound();
sound.play(0, int.MAX_VALUE);
and then plug it into the code above and you’ll hear the difference.
I’ve been using a .wav file, encoded to .mp3 by Flash to avoid the ID3 glitch, but have tryed straight mp3′s as well.
Seems like pausing a sound loop glitch free should be possible…
But how??
November 17th, 2008 at 11:40 pm
i can see your problem now that i have looked a a small looping sound. As far as i can tell it is easily fixed by adding a soundisplaying=true; statement to the soundcomplete function.
eg. function soundComplete(event:Event):void {
channel=sound.play();
soundisplaying=true;
channel.addEventListener(Event.SOUND_COMPLETE, soundComplete);
}
This fixed the problem with my loops, i don’t know why i missed out the line. And i hope this has worked and helped.
November 18th, 2008 at 9:50 pm
thanks for the reply – I was excited to try out your suggestion, but… no cigar. Try a tight sound loop and I think you’ll hear it.
I now believe Event.SOUND_COMPLETE is good in theory, but doesn’t quite translate to real time application…
I’ve spent way too much time on this… don’t know if you’ve come across this
http://www.stevensacks.net/2008/08/07/as3-sound-channel-bug/
but that seems to be the state of pausing loops in as3/Flash for now. Unfortunately.
Let me know if you come up with some magic…
November 18th, 2008 at 10:55 pm
this is an example of the loop that i used for the test with the new line of code in.
http://games.tudwaythecore.com/pause%20and%20play.html
it works ok for me, how about you?
November 19th, 2008 at 12:53 am
It sounds good, but I think if you tried a more densely populated multi-instrumental sound loop sample you would hear the difference.
Believe me, I want it to work too. I’ve spent way too much time on this fueled by optimism and faith only to come to the conclusion that Adobe’s Flash/as3 is sorely lacking in the sound department.
You did a great job with what we were given, my hat’s off…
February 7th, 2010 at 8:33 pm
What’s up about progressive “panning” sound by using pure AS3 inside the .fla file?…so that: No by ussing External AS3 Class file but pure AS3 inside the .fla
I Have this code piece:
//Starts Left Channel funcion
function leftBal(e:Event):void
{
if(!muted)
{
soundVolume = volume_mc.slider_mc.x/100;
if(sc!=null)
{
var trans1:SoundTransform = new SoundTransform(soundVolume,-1); //izquierda
sc.soundTransform = trans1;
muted=false;
}
}
}
But it don’t does progressive but total “pan” change…
Any idea?
Cheers!