Re: [LAD] Fader mapping - was - Ardour MIDI tracer

On Mon, 18 Aug 2014, Fons Adriaensen wrote: 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. Here is a picture that shows that: http://www.allen-heath.com/media/GLD-Faders_2800.jpg As you say 0 is a special case for off. everything below -10 is the same amount of travel for 10db. -10 to -5 and +5 to +10 are the same travel for 5db that the lower parts are for 10db. -5 to +5 uses more travel again. I think they use a lookup table rather than use any formula. I thought this next (analog fader) picture was odd: http://www.allen-heath.com/media/GL2400-4-24_Master-Section_2800.jpg -20 to -30 uses a lot more travel than -10 to -20... -30 to off is much compressed. I guess that is just the taper on the fader. It appears that faders do not have linear or log taper, but rather some custom taper that expands the -10 to +10 area for better usability. My Mackie CR 1604 (yes one of the first ones) with 60mm faders dodges the whole thing and puts unity in the middle with +20 on top and off on the bottom. The faders are probably a log faders. So I was wondering if there would be a difference in faders built for FOH and recording, this image of a Classic Neve 8068 Console from the 70s (or earlier?) shows the same kind of mapping though: http://lghttp.17114.nexcesscdn.net/808784/vking/media/catalog/product/u/s/u… Yes, I liked the idea of that: real easy to build. Probably fine for static mixing too. While many people "draw" the fade on the DAW waveform (or let the DAW do that for them), what about those who like to do that manually? Would that mapping make it harder to fade? Or to put it another way, The manual fade would end up being different than with an analog recording desk. If the artist is "drawing" the fade, why use faders at all? Rotary encoders would work fine and could be set to arbitray resolution on the fly with modifier buttons/keys (The control surfaces I looked at do this). In fact, rotary encoders could be better for mixing with a more positive feel for one "tick" if they are detented. (maybe use bigger knobs like in days of old) Does anyone have any ideas on what wrist movement is more natural, less strain? Would it be better to use an up and a down key? (maybe with up 10 and down 10 keys as well) I guess what I am saying is that todays control surfaces are based on operating methods from the 60s and 70s. Have operating methods changed in such a way that control surfaces should be different? Should operating methods change because of todays tools? Can a manual fade be done in a more musical way than a drawn fade? (thinking about the ear to brain feedback vs. repeat and tweak) -- Len Ovens www.ovenwerks.net