Low frequency audio level detector using PIC ADC?

[HankMcSpank]

YES, See how easy it is

thanks for bearing with me Bert ...it seems to be working a treat - ie Im feeding an AC signal of 5V peak to peak into an analogue pin...and the PIC is extracting the signal's peak level in real time.....just like a hardware peak detector (but better as the 'charge time' is essentially instant, and the 'discharge time' linear & changeable on the fly).

FWIW, I'm also reversing the ADC reading from the negative half of the incoming AC signal (ie readings below 128) to give a smoother overall reading (essentially full wave rectification in software)

the special event trigger was absolutely key in getting this to work without using interrupts ....a hearty thanks to languer too :-)