Patrick,

	The artifacts that you hear from the granular synthesis is the result of the
grains aligning themselves into a pitchlike frequency (grains themselves are
little bursts of sound, so they can do that).  This happens when the grains lose
their random placement and start to fall along the path of a sin wave, and you
can get rid of it in a couple of ways. Todd's way is to introduce a new grain
note, which probably adds enough random new granuals to noise out the pitch. 
Another way is to apply some sort of a noise gate above a certain threshold
right below the high frequency pitch.

	hope this helps!

> > fooling with Grains now and have a dilemma
> > I render out these two files and they sound fine for about 15 seconds
> > then a super high pitch appears,which I do not want then it appears
> > again later on in the piece. I have rebuilt the instrs on another piece
> > and there is no squeal-can anyone diagnose after rendering it out??
> > thanks
> > Pat

-- 
Michael Coble::Director, Client Engineering::24/7 Media, Inc. 
    Digital Art Gallery, http://www.panix.com/~coble/
    Music, http://www.panix.com/~coble/Coble/music/