🚀 go-pugleaf

I have been doing some research looking up circuts in past issues of
Radio Electronics and various books to try to come up with a circut that
will detect a low level ( coming directly out of your preamp ) audio
signal.  There seems to be many twisted ways to do this, but I am looking
for the easiest and cheapest.  I want to incorporate a time delay from the
time the signal is detected to the time trigger is switched.

Unless there is an easier way I am going to use a 555 timer for the delay.
The main question I have is how do I convert the low level audio signal
into a DC current to trigger the 555 etc...

Thanks for any help                                             - Dan
-- 
  Daniel Joseph Rubin    |  "...A good football team for the alumni, parking
rubin@cis.ohio-state.edu |  for the faculty and sex for the students."
      GO        GO       |  - President E. Gordon Gee on the three things that
    BENGALS  BUCKEYES    |  a great university president must provide.....