This code/sketch makes finding the general direction of sound easy. This code/sketch drives two LEDs to indicate which of two microphones is receiving an audible sound. If both microphone sensors detect sound, both (left and right) LEDs light indicating that both microphones have detected sound. If one microphone sensor (left or right) detects sound, then the corresponding LED (left or right) will light up. If no microphone sensor detect sound, then no LED will light up.