You may try this library, example include NeoPixel 8x5 shield (adafruit). Sparkfun electret mic board connected to analog 0.
http://coolarduino.wordpress.com/2014/03/11/fft-library-for-arduino-due-sam3x-cpu/
You may try this library, example include NeoPixel 8x5 shield (adafruit). Sparkfun electret mic board connected to analog 0.
http://coolarduino.wordpress.com/2014/03/11/fft-library-for-arduino-due-sam3x-cpu/