On Fri, 12 Jan 2001, Dan Michaels wrote: > Anyone have actual experience using these filter thingies in "audio" > apps, like Edson is after? IIRC, they produce large phase shifts on > the signals, and may distort sounds. You can build any of the classic types of filters out of them, with all the characteristics of said filters. As far as sound goes, you've been listening to those types of circuits all your life. Nothing wrong with phase shift and distorted waves. Cheers, Bob -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads