Originally Posted by rickfox
I have checked 5 versions so far,one DVD Disk,two Blueray Disks from different TDKR Blueray product,two download version mkv file(1080p-2.47G,720p),that sound does exist.
-you have to use earphone,it comes from left ear side(left side of Screen).
Yes, I hear it too. It's like a little crack coming from the left side. Could be the batsignal just really cracking inside. I don't think they would add that sound.