Hello,

I have an application which requires that a PIC
microcontroller monitor the volume level on a microphone.
It doesn't need to record or anything, simply monitor
the volume level and take some action based on whether
the level is above or below a certain threshold.
This cannot be done with a comparator since the threshold
can be set at will by software inside the PIC.

Are there any schematics available on how to connect
a microphone to the A/D port of a PIC?  Do I need a
pre-amp?  What else would I need?

Thanks in advance.

                Hisham.


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Hisham A. Abboud
Cedrus Corporation.         On the Web: http://www.cedrus.com