I need a little help trying to replicate some voice FX. In particular, I'm trying to get the same kind of voice effect from the Shrouded Clan from ID Software's "RAGE". For those who don't know, there's a video below.
My first assumption is that the voice effect was achieved by talking through some sort of pipe or tube, but I haven't come to any conclusions yet. I have plenty of VST plugins at my disposal, so any sort of help, whether it be general or technical, would be most appreciated.