Spectrum analyser Equalizer project, how to go about it? any idea of where to start I want some led dot matrix's and recreate what old stereos used to do, with red LED's. I have arduino chips and I want to put a microphone near so it and have high pitch sounds on the right and deep bassy on the left with the rest inbetween. I think this would be a right good little project and maybe have a 3.5 jack in and a 3.5 jack out without altering the sound but takes the signal and displays it in bars according to frequency range and have linear resistors to interact with how high up the bar goes exactly like old stereo systems, I had one when I was young and loved it. I would stare at it for hours any input valued!