I would like to use the arduino to control not only some leds but other devices based on audio input. I am going to start with leds to keep it simple as I figure out how to do it.
I’ve seen VU meter and spectrum analyzers for the arduino. However, everything I have seen has a computer that processes the audio and sends commands to the arduino over serial.
I want to cut out the computer if possible. What I would like is something that takes stereo audio and mixes it into mono. I am not going to deal with stereo right now. Then using filter circuits connect a low, mid and high line to analog pins on the arduino.
I would like to know if this is a possible and how to make the circuits needed.