Warning: more than a few of us have tried this BTC idea without any success. My research seemed to indicate that at least 3 bits are needed to cover the dynamic range needed for almost any viable sound. So good luck. Keep us informed of your progress. --Bob Quoting rolf : > > > Thanks PICLIST for the excellent suggestions... > > Roman Black's binary time constant algorithm seems like > it might be the right thing for me. > I will also look up the old posts about it. > > Also, thanks to the one that pointed out that a small > amp is needed with Roman Black's trick. > I am trying to keep this super-cheap, and to run it on a 3V coin battery. > Anyway, I will look into that too. > > Cheers everyone! > > -rolf > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist