Use the full 0-127 resolution of a MIDI fader to control a smaller section of a parameter
To allow for more versatile parameter control MIDI learn should have the following options...
- Slider for low value (defaults at minimum scale)
- Slider for high value (defaults at full scale)
Using the default values MIDI learn behaves as normal, but if you would like to control only a small portion of a parameter in REAPER, lets say from -6dB to +6dB with the full throw of a MIDI fader you would set
Slider for low value = -6dB
Slider for high value = +6dB
Now when you move your MIDI fader from 0-127 the volume fader controlled goes smoothly from -6dB to +6dB!
Using a bit of thinking and inverted control of the Q setting (high value for the 'Slider for low value' and low value for 'Slider for high value') you can get the gain-Q interaction as in the video below...
Slider for low value = 0
Slider for high value = +7.8dB
Slider for low value = 3.00
Slider for high value = 0.4
This kind of behaviour has already been implemented in other DAWs such as Ableton Live etc.
Discuss here please - http://forum.cockos.com/showthread.php?t=101430
(Devs - This would be my preferred implementation method but a baseline value/offset & percentage system if it's quicker would gratefully be accepted ;)