STRINGS1
======

* Knob 1: Loop start
* Knob 2: Loop length
* Knob 3: Pitch
* Input 3: Gate trigger

All code ripped from Framen who ripped and modified these fine people's work:

* http://www.ginkosynthese.com/product/grains/
* http://playground.arduino.cc/Code/PCMAudio
* michael@hurts.ca
* https://www.facebook.com/HRTLmuzik
* https://github.com/thatpixguy/hrtl-amen