Demonstrating a few sound reactive routines, including FHT.
Channel: Andrew Tuline
Date: 03/02/2017

Note: The FHT enabled routines may not compile on IDE versions greater than 1.6.9.

This video show the difference between basic sound reactive and FHT sound reactive routines. The latter analyze sound input into frequencies, which we can then output to the LED strip.

I'm using a Sparkfun MEMS microphone and connecting it directly to an Arduino, with no MSGEQ7 in the loop.

All these routines are included in my Fast:ED Demos github repository at:

* https://github.com/atuline/FastLED-Demos
* https://github.com/atuline/FastLED-SoundReactive

Routines demonstrated are:

* soundmems_peak_ripple_pal.ino
* fht_log.ino
* fht_log_ripple.ino

I've also added a potentiometer to adjust sensitivity.