I'm trying to determine the feasibility of a possible arduino project before diving into tutorials. What I'd like to do is create a small array of sensor / circuitboard combos which can each do their own FFT analysis, either in real-time or with a short lag. The end result would be data visualization of the subtle differences of frequency distribution of, for example, 3-4 different devices scattered throughout a medium size room. I'm assuming the limiting factor would be the fidelity of the audio sensors, and the capabilities of the on-board processors? I've done some searching, but am only finding projects / information that uses arduino to translate audio from a laptop into FFT data to then drive an external display such as led matrix, which is a little different, since I'm looking to translate from audio sensors into FFT data. Again, my question is just on general feasibility - given available hardware / software etc., does this seem possible? Thanks!