I imagine it would create a pseudo-animation effect if you used the Winamp voiceprint visualisaion.
At least that's how I remember it, I noticed it a few years ago when making a mix CD and I was editing the tracks in Cool Edit.
I seem to remember some penis shapes as well.... Well actually, they look more like arrows but they are pretty bloody Freudian.
Funny thing is, I remember hearing windowlicker and thinking - 'that sounds like Coagula' but I didn't think to look at it in a spectroscope app.
There are some sounds like that in one of the Come To Daddy remixes - anyone checked that out?