The Project :
I'm building a prototype of an automatic camera which is steered by two servo motors (pan/tilt) to the direction of sound arrival to a microphone array of four sensors.
The array allows me to "locate" the direction of arrival, what is left is simply steering the servos to that direction. In order to do that I'm using arduino mega 2560 to pass signals detected by microphones to Matlab through the serial port so that I can do the processing.
The whole processing is done on Matlab, the Arduino is just used as an interface between the array and Matlab.
The Problem :
I used the analog inputs on Arduino ,I didn't find any data sheets about my Arduino to learn about internal A/D converters (if any). I'm not sure if the outputs are converted to digital or analog and no conversion occur.
How can I identify the data of each sensor on matlab.