Question by Beanalby · Mar 28, 2013 at 02:29 AM · audiosource volume

Why is this AudioClip quieter 2nd time played?

Try it here: http://beanalby.net/unityAnswers/audioBug.html

Project source: http://beanalby.net/unityAnswers/audioBug.zip

Video of what I hear: http://www.youtube.com/watch?v=4C6oGh8H8kQ

EDIT: Apparently this is just my desktop's onboard sound (Realtek ALC662); using my Logitech G330 USB headset doesn't have the problem. Happens in Unity editor, web player, and standalone build, and persists through reboot.

Play clip1, clip2, and then clip1 again - clip1 is quieter the 2nd time. Why? There's nothing in the script that does it:

 public void OnGUI() {
     if(GUI.Button(new Rect(0, 0, 300, 200), "Play1")) {
         source.clip = clip1;
         source.Play();
     }
     if(GUI.Button(new Rect(400, 0, 300, 200), "Play2")) {
         source.clip = clip2;
         source.Play();
     }
 }

Here's a waveform of the output. I did clip1, clip2, clip1, clip2.

waveform showing problem

Add comment · Show 7

Unitraxx · Mar 28, 2013 at 02:45 AM 0

Try putting Debug.Log(source.volume) before source.Play(). Also try setting source.volume = 1 explicitly.

Beanalby · Mar 28, 2013 at 02:54 AM 0

Confirmed that source.volume is 1 throughout the program.

justinl · Mar 28, 2013 at 03:18 AM 0

Are you sure it's actually quieter? Sounds the same to me. Perhaps because the second one is so much louder than the first clip that there's the illusion that it's quieter.

Beanalby · Mar 28, 2013 at 03:26 AM 0

It's definitely quieter, the waveform image verifies it. It could be something specific to my desktop, though. I'll have to try it on another machine.