Actually, if you mean the very beginning with the feedback on the guitars at the beginning of the album, before the acoustic starts, you might be talking about the patch called "Air" on the Eventide H-3000 from that period. (The blue -faced one). It eventually became a patch in the
Steve Vai library, but it was borrowed from Satch, and Steve kinda tweaked it for the reverb sound in the middle section of "The Riddle" on Passion and Warfare...
I read about this in the old newsletter I used to get for Eventide users and owners...