[sdiy] Polymoog resonator question

Donald Tillman don at till.com
Sat Oct 6 23:33:28 CEST 2018


> On Oct 6, 2018, at 1:37 PM, Richie Burnett <rburnett at richieburnett.co.uk> wrote:
> 
> Shouldn't the gain vary exponentially in shape with pot position in order to get an exponential frequency response from the control that feels natural?

In a perfect world, yes indeed.

And if you control it with an active exponential converter, sure.

But if you're just using a pot, it's going to be an approximation.  And a linear pot into a summing node is a pretty good approximation.  Arguably better than an attenuator circuit with an audio taper pot.

  -- Don
--
Donald Tillman, Palo Alto, California
http://www.till.com




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