41+ Knock Through Wall For Door. If you think ghosts knock on doors and walk through walls, that's what you'll experience when your brain tells. As for walking through walls, none of the ghosts i know of actually do that, but they sure talk like they do.
Free sound effects of doors and other surfaces being knocked on.
We also would like to knock through the current wall that the kitchen shares with the current conservatory. The phrase knock on the door usually uses knock as a verb. Various intensities and versions are included. I think ghost behaviour has more to do with what we expect of them, than anything else.