Switched capacitors

[egasimus]

I'm greatly interested in the topic of using switched capacitors in audio circuits. I have read about them in R.G.'s article on voltage controlled resistors, and have seen mentions of a switched cap phaser, but really haven't found much information about them. Can one be implemented using two JFETs or MOSFETs, or would that be too slow? What about a 4066 quad CMOS switch?

[amptramp]

R.G. has it all laid out in a switched phaser here:

http://geofex.com/Article_Folders/ASMOP/asmopphase.gif

Something similar was done here:

http://www.diystompboxes.com/smfforum/index.php?topic=76747.0

and there was one on Electronics Today International, project 447 from Sept 1976.  Look for Audio Phaser ETI 447.pdf (but I can't link to it from here).  You might be able to open it from:

http://www.synthdiy.com/