That's how they intended it; I think I read that somewhere once.
But as people have already stated, it's way more fun to just drone the hell out of that O))) in real life.
SUNN OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO))).... etc.
I watched this the other week. I highly recommend seeing that if you're even remotely interested in the genre. It made me like Faust even MORE! Shame they never mentioned Mooney of Can, though.