mixxxdj/mixxx — pull request #254 by daschuer (2014-05-06 19:20:19+00:00)
Title: Audiotaper

This implements a audio taper potentiometer like found in hardware mixer.
IMHO the new interface and implementation is much more self explaining:

double minDB,
double maxDB,
double neutralParameter

I have made all log pots to this new one, but set the range to the values it was before.
So this is just a refactoring task for now and there should be no notable change from the user point of view.

In the future this change allows to implement "long" sliders to -70 dB or add a boost region above 1 to a volume slider.