As you know some EQs call for an S-curve pot. This is how the curve of an actual digital pot for EQs looks like:
(http://i7.photobucket.com/albums/y263/GreggPics/EQ_pot.jpg)
My questions is which formula describes this curve and/or how to derive such formula from the resistors values shown in order to be able to calculate such values for a potentiometer with any given value?
If I have a 50k pot can I just divide the shown resistors values in 2 and get the new ones?