I want to make a simple gadget that can control 10 banks of LED's and turn them on and off off depending on the frequency or volume of some music. I'll probably use an Atmega16 as I have a few of these and turning on and off the LED' is no problem either. I am just not sure about measuring the sound. If I hook up a mic and pre-amp to an ADC on the Atmega16 will it read variations in the voltage? Any advice would be appreciated.