>I would probably say Craig Anderton's Multiple Identity Filter based on >the CEM3320 - > >http://synthdiy.com/show/?id=624 > >Doug >synthparts.com Original Keyboard MIF article including schematic here: http://www.crowncity.net/ratcave/Electro/MIF/mif.html -- Terry Bowman, KA4HJH "The Mac Doctor"