Maitland Vaughan-Turner:
  Maybe. But I would say something like this:
    
http://www.pawfal.org/Software/fastbreeder/
 would be more fitting for actually being
 an audio function generator.
 
 Oh man!  That is glitchtastic!  I love you! 
 
Happy to share the link!
And just to clear up a potential misunderstanding,
fastbreeder is made entirely (as far as I know) by
David Griffith.
(for once I wasn't plugging my own software. :-) )