[LAU] Vocal F/X ???

I've been trying to figure out how to get a particular vocal effect using Linux tools, not that I even know how to get the sound with any tools. About 8-9 seconds in to the clip below a vocal is introduced which has the sound I'm looking for. http://www.doink.com/lau/spocks_beard-day_for_night-04-the_distance_to_the_… How do I get that sound? I have 5 very good singers at my disposal, if it turns out to be a vocal styling thing. But, I think there's more going on than vocal style. It sounds like there's some sort of envelope on that vocal track. Thanks.... FWIW, the entire CD from which I snipped this section is very very good in terms of musicianship & production. After that it's personal taste, and they're among my favorite bands. -- Kevin