RGB LED Color changing depending on Audio Signals

Forum 2005-2010 (read only) General Frequently-Asked Questions
#1

Hey together,

i am pretty now to Arduino but i guess its just great! Now i have to realize a project with the following specs:

I need to make some RGB LEDs from LillyPad change their color depending on the sound which is recorded with a mic. Actually it's an equalizer only with colors.

What i wanted to know from you is the following:

1.) What hardware setup would fit these specs? 2.) Can you give me some hints on processing audio? Looks like i have to implemet a code that changes the color of the RGB depending on the discrete frequency of the audio signal. I have seen some FFT tutorials on the play ground. Are there any other approaches. DO you have some reading infos?

Thanks in advance!

Cheers

#2

While you can go down the FFT route it is a bit complex probably the simplest is to get some hardware that will do the splitting for you. Look at this link:- http://skoba.no-ip.org/msgeq7/index.html

For getting sound into the system see the circuit at:- http://interface.khm.de/index.php/labor/experimente/arduino-realtime-audio-processing/

#3