On Wed, Aug 20, 2014 at 10:37 AM, Len Ovens <len@ovenwerks.net> wrote:

On Mon, 18 Aug 2014, Fons Adriaensen wrote:

A slightly better mapping would be 80 step of 0.5 dB for the
range +10...-30, then smoothly increase the step size to arrive
at a minimum gain of -70 dB or so. Even for this the calculations
are trivial.

I thought this was quite exciting, the idea of being able to use a linear input and map it directly to DB. However, Mixers don't look like that, the area from plus 10 to -10 takes up a whole lot more room on the fader travel than anything lower than that.

if you haven't discovered this yet, you will find that ardour does the same non-linear, volumetric mapping of fader position.