Jan-Erik S=F6derholm <jan-erik.soderholm@telia.com> wrote:

> One problem with "reading" the original audio signal,
> is that you *could* be doing the ADC-conversion right
> when the level is low enought to give a false "no-audio"
> answer. So you probably whant to have some signal
> smothing (integration) circuit anyway. This depends
> on what reaction times you expect.


PIC16F785 has some built-in Operational Amplifiers.

MS.

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