What is the easiest way to drive a logic high input pin on a microcontroller with an electret microphone?
I want the microcontroller to be able to detect a clap or whistle or any spike in sound pressure. Sound quality and frequency are not important.
The catch is that the circuit MUST run from a single 3v lithium CR2 battery.
The microcontroller is a 12F675 and it has an ADC, so I could use the ADC if it is not practical to get 2.5v to 5v for a digital input pin. But I think I still need to boost the electret's output for the pin to be able to detect a change.