Go Down

Topic: old style jutboxes that flashed lights to the beat of the music (Read 757 times) previous topic - next topic


Remember the old style jutboxes that flashed lights to the beat of the music. What type of device is this? I would like a series of multi colored LED's to strobe and flash based on the beat and tempo of the music. I would like to build a device that has a microphone that is the input of the audio, verses a direct feed for an audio port.


They call device light organ or color organ:


They way a light organ usually works is by using analog low, ban and high pass filters to isolate signal frequencies to trigger specific lights.  Unless you used such filters on your audio signal prior to entering the ADC on the uC you will need to do this audio separation in software.  The software technique to do this is call a discrete fourier transform (DFT) or its faster cousin the fast fourier transform (FFT). 

It looks like someone has already done something like what you thinking about here:



Go Up

Please enter a valid email to subscribe

Confirm your email address

We need to confirm your email address.
To complete the subscription, please click the link in the email we just sent you.

Thank you for subscribing!

via Egeo 16
Torino, 10131