[sdiy] RE: Modified potentiometer response curves?

[Paul Perry]

Hi Mattias!
I suppose you know
http://www.geofex.com/article_folders/potsecrets/potscret.htm

I strongly suspect that a centre tapped linear pot would be the best
starting point for your x^3.

Generation of control voltages of various transformations is a well-explored
field. I even have a book dealing solely with this, dating back from the
days of analog computers:
Function Circuits (Wong & Ott) mentioned on this page:
http://dcoward.best.vwh.net/analog/readlist.htm

best, paul perry Melbourne Australia (Frostwave)