Audio "skips / stutters ' second time it is played.

I am building an app that reuses several sounds again and again. I'm running a problem with the audio tag when a sound is reproduced.

The first time that the sound is played he plays well, but sometimes it "stutters" at the beginning of the sound clip.

I broke it up to its simplest form:

sound test

I posted a working example at http://www.tristancater.com/playbook

It's works fine in chrome, but you will live the stuttering through the browser of the PlayBook.

I know that I can recreate the sound whenever I want to use that eliminates this problem. But this, I was running in the memory of the questions because each audio clip is loaded into memory and I could not find a way to free him.

her var = 'Right ';

function playSound (sound) {}
SND = new Audio (sound + ".mp3");
SND. Play();
}

I thought I had found a work around for this in this way:

her var = 'Right ';

function playSound (sound) {}
SND = new Audio (sound + ".mp3");

snd.addEventListener ("finished", function() {}
SND. SRC ="";
(}, false);

SND. Play();
}

This solves the memory eating question however, that random application crashes.

I'd love to hear all of the solutions to repeat audio. I'm sure it's a common thing in games.

I also had trouble with HTML5 audio on the PlayBook, and I found a solution that seems to work perfectly well.

First take a look at the Tunneltilt sample of BlackBerry:

https://github.com/BlackBerry/WebGL-samples/tree/master/tunneltilt

See the 'sounds.js', "Readme.md" and the folder blackberry.custom.audio files

They play using an adobe air extension, not not not using HTML5 audio. This extension has absolutely no problem with playing multiple sounds at the same time and the sound is clear. There are some things to notice, you:

I wasn't able to play wav files so I had to convert all audio files to mp3
Audio files may not be too short, so I added some silence at the end of the sound. My tests, I found that the audio files must be at least 130-130 milliseconds long.
Ripple (in its current version) emulator does not support the extensions, so you hear no noise up to that deploy you your application.

Here is an article that deals with extensions:

http://supportforums.BlackBerry.com/T5/Web-and-WebWorks-development/tutorial-for-writing-WebWorks-ex...

Just one last thing. I think they have a leak memory in the extension code, so here's my version of the file 'CustomAudio.as ':

package blackberry.custom.audio
{
    import flash.media.Sound;
    import flash.media.SoundChannel;
    import flash.media.SoundTransform;
    import flash.net.URLRequest;

    import webworks.extension.DefaultExtension;

    public class CustomAudio extends DefaultExtension
    {
        public function CustomAudio() {
            super();
        }

        override public function getFeatureList():Array {
            return new Array ("blackberry.custom.audio");
        }

        public function playFile(eFileName:String, eLoops:int, eVolume:Number, ePan:Number):Number {
            var req:URLRequest = new URLRequest(eFileName);
            var snd:Sound = new Sound();
            var channel:SoundChannel = new SoundChannel();
            snd.load(req);
            var pausePosition:int = channel.position;
            var sndTransform:SoundTransform = new SoundTransform(eVolume, ePan);
            channel = snd.play(pausePosition, eLoops, sndTransform);
            return 0;
        }

        public function setVolume(eSoundID:Number, eNewVolume:Number):void {
            //this method has been disabled
        }
    }
}

It will be useful.

Tags: BlackBerry Developers

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