On Thu, Aug 21, 2014 at 08:06:13PM +0100, John Rigg wrote: > http://www.pennyandgiles.com/Products/Audio-Faders-Video-Controllers/Linear-Manual-Fader-PGF8000.aspx > > The Panel Graduations/Slots diagrams on page 3 show the taper characteristic.
The taper I'm using in some apps is very similar: <http://kokkinizita.linuxaudio.org/linuxaudio/faders.png> A position vs dB plot of this consists of two parts: the top one (down to -20 dB in this case) is linear, the bottom half is parabolic. The two curves are tangent at the intersection point, so there is no 'jump' in the dB/distance ratio. Mapping functions in both directions are very simple. Ciao, -- FA A world of exhaustive, reliable metadata would be an utopia. It's also a pipe-dream, founded on self-delusion, nerd hubris and hysterically inflated market opportunities. (Cory Doctorow) _______________________________________________ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev