Buchla Music Easel Timbre section clone

This is basically a clone of the Buchla timbre found in the Easel. I have added a simple tri2sine converter input, along with the regular input, and buffered output.

https://store.magpiemodular.com/collections/all-panels/products/non-linear-circuits-timbre

http://nonlinearcircuits.blogspot.com.au/2015/04/timbre-generator.html