by stubbsonic » Tue Jan 31, 2017 4:32 pm
MIDI only provides three per-note controllers. Note-On Velocity, Note-Off Velocity, and Polyphonic Aftertouch. I.e., through your playing you can set a value for the start of each note, change values throughout the sustain of each note, and set final value for the end. It's a pretty good system.
Dune 2 only responds to Note-On velocity. The manual justifies Dune 2's lack of Poly AT response by saying that those keyboards are rare, and that may be so. Some newer controllers are now providing 3 dynamic controls per note, X (horizontal), Y (vertical) and Z (poly AT pressure); the MIDI spec only provides for one polyphonic control stream (Poly AT). I don't know if a new MIDI spec will expand that to Poly AT A, B, C, etc.
Keyboards with release velocity are not rare. My last keyboard (Roland A-70), and my next keyboard (VAX MIDI) both transmit release velocity, which I like to use to control release time, and volume/cutoff of release. And my reason for buying the VAX MIDI is for the poly AT (and other great features).
But regardless of whether a keyboard is capable of transmitting poly AT or release velocity, most DAWs will let you use those control values/streams via editing.
Synapse Audio should add release velocity to the source list immediately. And if Poly AT can be added, it should be.