Audio Anaylzer

The Captain

Has anyone made an audio spectrum analyzer for the prop yet, as I know there are several for the arduino.

The idea is to start small, simple 3 band analyzer outputting to 3 leds: green, yellow and red.

Bob Lawrence (VE1RLL)

Yes, Beau Schwabe (Parallax) made one. Try this URL

http://forums.parallax.com/showthread.php?96099-Propeller-Application-DEMO-Spectrum-Analyzer-(for-Audio)

Heater.

You could have a 1024 different frequency bands if you used the Fast Fourier Transform to analyse the frequencies.
Group those to light up as many LEDs as you want to have.

http://forums.parallax.com/showthread.php?128292-Heater-s-Fast-Fourier-Transform.