I've been having difficulty measuring the frequency of a sound (20hz - 20khz)coming from a MAX3814 microphone with auto-gain-control. The microphone's output pin produces 2vpp with a bias of 1.25v. Should I be able to use this voltage to find the sound's frequency without any other amplifiers? The voltage is already measurable, yeah? Why modify it?
All my internet research says I have to use digital pin #5 for its special timing properties. (Something about interrupts. I'm still learning)
Am I wrong to think I don't need to amplify the signal? (connecting the Vout of my mic directly to the Arduino)
I'm using FreqCounter in the code.
Any guidance or help appreciated. I attached an image of my circuit.https://drive.google.com/open?id=1CGSG5n7AHhMQetWMZaWVHlNAc9QA2PI8Qg