Sounds... crackly. Like electricity.

[Wiglaf the Dedenne confirms by running a few sparks along his whiskers. Dave runs a hand back through suddenly staticky hair. If Jane weren't watching, maybe he'd do something dumb like touch it himself, but as it is he is the adult, here.]

Wig, you mind having a look?

[Wiglaf hops down and starts sniffing at the wall, then presses his face and ear up against it to see if he can make more out than his useless human friend. Dave glances back at Jane.]

Maybe it's just a bunch of radios tuned to the wrong station?