Hi @focalsounds ,
Before I jump on the questions, just a comment. MPE on the Seaboard does not require a computer. You only need the computer to enable or disable it (through the ROLI dashboard for sure). But once you set the seaboard to MPE, all the settings are saved on the controller, and thus you can use it without a computer. I actually use the seaboard hooked up to the UDO through the MIDI jack.
Only if you need to switch between MPE and non MPE synths, then yes, the computer will become necessary to switch the Seaboard out and into MPE mode. It would be nice if we had an MPE, MIDI mode button on the Seaboard itself.
If the Seaboard and UDO are on MPE mode, you have poly aftertouch enabled. Thus, I am assuming your issue is that you do not have the AT connected to anything.
On the Desktop version of the UDO you have a connection provided, in the LFO2 section, which enables vibrato to Aftertouch at the rate of the LFO, and intensity set with the mod amount to taste.
To control anything else you need to make an entry in the modulation matrix. AT is the W5 entry.
So, if you are only interested in vibrato through poly AT, and you have the desktop version, you make sure both lights are up on the mode button of the LFO 2. Also, the DDS I and II buttons have to be enabled. Finally, press and hold the DDS I II button and turn the amount knob to set the desired intensity of the pre-established connection.
The init patch brings this connection by default.
Now, if you have the keyboard version of the UDO (which at this point I’m assuming you do, based on the issue you are facing), the vibrato is routed by default to the bender stick and AT. The rate defined by the LFO2 Rate and the intensity you define by pushing on the stick I guess (checking the manual).
Thus, you have to set the control section to AT + TRIG mode. The manual states that the great effect takes precedence between the two (between the bender and the AT).
What I do not know (since I do not own the keyboard version), is whether the fact that the bender is mono channel, this connection will stop poly AT from being applied to vibrato (and will make it work as mono channel as well). But since the firmware is the same for both units, I don’t think this will be the case.
Let me know if this was the answer to your question.
Personally, I prefer to wiggle my finger to get vibrato on the seaboard, so I don’t route AT to vibrato.
I usually route Poly AT to the Env amount of the VCF and the VCA Env level. In this way, when I press harder any key, I will get a slightly brighter sound with a higher volume. This is, ofc, an homage to the CS80 which allowed you to apply poly AT to these two parameters with the levers.