But then, come to think of it, if the audio is  binary (which it is),
isn't it easier to just gate the DC voltage from the smoothed out PWM
using the audio signal, instead of attenuating the audio signal?

-- 
Hector Martin (hector@marcansoft.com)
Public Key: http://www.marcansoft.com/hector.asc

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist