Hello!
Your question;
When you say "feed the audio through the voice changer" how would you actually do this? circuit wise?I
assume the voice changer has either a
speaker or 2 wires feeding into the input of the circuit.(?)
If a speaker, you will need to take the "hot", or positive wire
FROM the recorder (via ear plug) and
feed it through a capacitor.
Polarized, so the positive part of the capacitor is going
TO the voice changer. (Usually 1 - 10 microfarads) using a capacitor in this way is called, a blocking capacitor. It blocks the
DC (direct current), and lets the
AC (alternating current) through, which is, the pure audio. The grounds can be hooked up directly. The blocking capacitor protects both circuits from shorting each other out, depending on the types of amplifiers internally used (unknown)
If just 2 wire input, find the "hot" or positive, and hook the capacitor in line accordingly.
You may have to play with the levels of microfarads, to get it right. if you hook it directly, you
might have a boo - boo!
If
you want a way to playback just the audio, and then the voice changer afterward. put a
double pole, single throw relay (or switch) in line. the normally closed version goes from the recorder to
a speaker; when the relay is activated, the normally open contacts pass the audio to the voice changer,
and Voila! the voice is changed!
Sparkfun and velleman has electronic kits that can do the interface for you, I am sure. It is not critical,
just a little tedious. Good Luck!!
