Static noise when clicking in game on ipod touch 4g

[Blind]

Hey guys, i have a serious problem here. One day i noticed that when i play on my ipod touch 4g, everytime i click on anything in the game, it makes this static/crackling noise. So what i did is i reinstalled the gand rebooted. Nothing helped. After that i reinstalled my ipod to factory settings as a new ipod, even without backup. That didn't help either. So then i called apple, and later went to the store and got my ipod replaced. And guess what, the brand new ipod is doing same thing, static sounds when clicking in the game. Does anyone have any idea on how to fix this? My ipod is updated on itunes and what not. And this is seriously annoying. Any help would be much appreciated, ty! :D

[Ellyidol]

Are you using earphones?

[Blind]

It's doing it with and without earphones

[Ellyidol]

Ah. I've had the same problem on my earphones, changed them and it fixed them.

Not sure on device, I don't think it's your device though. Maybe overheating? Lol.

[Blind]

No definately not overheating. Damn, i dunno what to do then, even the guys at the store didn't know what it is. 2 different ipods and same thing. :(