Liens intéressant Arduino
Installation lo
Syntaxe des instructions
http://arduino.cc/en/Reference/HomePage
Arduino FFT and Processing Audio Spectrum Analyzer
http://www.arduinoos.com/2012/02/microls-part-1/
http://www.instructables.com/id/Arduino-Processing-Audio-Spectrum-Analyzer/?ALLSTEPS
Changing PWM Frequency on the Arduino
http://arduino-info.wikispaces.com/Arduino-PWM-Frequency