Greetings,
I had an idea, and I wonder if it would work. Basically, I want to
construct an 8 channel audio VU meter (level meter). This would be used
on a mic/line level source rather than a speaker level source. I think
there are dedicated chips for this, however I wondered if I could do it
with a pic. If I used a 16f877, i'd have 8 analogue inputs, and I could
use an 8 bit port for an 8 segment LED bar graph, and another 8 bit port
to multiplex 8 of those bar graphs. I just am not sure that feeding the
audio signal straight into the ADC would work. I know I would have to
figure out the voltage range.

Supposing this works, would it the be possible to make a small audio
spectrum analyzer? Perhaps if I put a filter on each analogue input that
only allowed one frequency, or a small frequency range through?

Anyways, I was just brainstorming. Is any of this even possible? BTW
James did I get the header right?

Thanks in advance,
Josh Koffman
joshy@mb.sympatico.ca