In the past I shared a problem with MIDI learn and a specific behavior with a specific virtual synth (Charlatan, here the complete history).
In a specific moment I gave up and said: It’s time to forget the MIDI controller and use the generic controllers of Ardour and automation but…
The problem was still there, Ardour indicates a value for an encoder and the synth GUI indicates another. A nightmare! But mostly, Why?
I can’t sleep with this problem and in appearance it was a problem of the VST, you know Ardour can’t handle all specifications of all VST of world. So, I ask to Charlatan developer and his answer changed the perspective.
Basically the problem is the way of Ardour handles the mapping of the parameters. “Charlatan follows a nonlinear (logarithmic) mapping” and “Ardour strictly maps parameters to a linear value range”. karrikuh (Charlatan’s dev) says that Ardour’s way is a weird way “and differs from any other DAW” (here the complete karriku’s awswer).
I guess there are a lot of cases with the same problem, out of the world there are thousands of thousands of VST, LV2 and CLAP instruments, so… Why Ardour follows a different “standard”?
And Is possible to use a Lua script for change the behavior of a parameter (from linear to logarithmic)? Here a clue (or not, I don’t know nothing about Lua powers).