There's a great description here: http://www.math.uwaterloo.ca/~mrubinst/tuning/12.html http://www.math.uwaterloo.ca/~mrubinst/tuning/12.html It's too in-depth

There's a great description here: http://www.math.uwaterloo.ca/~mrubinst/tuning/12.html http://www.math.uwaterloo.ca/~mrubinst/tuning/12.html It's too in-depth to summarize, but worth a read.