Hello,

Thanks to everyone for the info!  Here are a few links:

http://www.music.princeton.edu/PSK/hyper.html

Virtual Waves spectral sketchpad feature:
http://www.synoptic.net/

http://www.ircam.fr/produits-real/logiciels/metasynth-e.html

http://windworld.com/emi/software.htm

Apparently WCShell does this too but I could not find it?

I got the Java one to work which was a lot of fun!  Metasynth looks pretty
cool too!  Maybe it would be good to have color represent panning
(Red-->Green==left-->right) (I think Metasynth does this),
intensity=volume, Y=Frequency and X=Time as usual.  I also see it would be
necessary to go both from audio to picture and back again.  To make the
most of a system like this special drawing tools and image filters could be
developed.  Otherwise there are a lot of drawing programs with advanced
editing and filtering tools but they are not geared towards audio at all.

Bye,
Hans