Hi, is it possible to use CC-rider as a one-shot MSEG envelope, or even just an AD envelop? If not, does unify have a different CC widget for ASDR?
No, unfortunately CC Rider functions only as a MIDI LFO; it does not (presently) have a one-shot mode.
The only way to set up a one-shot, MIDI-CC sequence in Unify (without resorting to third-party effects) is to generate the required MIDI CC sequence somehow, save it to a MIDI file, and play that back in MIDIBox set to one-shot mode. I'd be the first to agree this is not ideal, but more importantly, even if CC Rider had a one-shot mode, it might not do what you need.
A critical thing to understand is that, as a plug-in host, Unify cannot control individual synth/sampler voices (notes). This is why synth and sampler plug-ins all have their own internal ADSR envelope controls: because they provide multiple, identical ADSR envelope generators, one per voice. A host program like Unify has no access to a plug-in's internal voices, so it can't do that.
OK, got it. So then external one-shot is of secondary importance, as it would only be effective for single note / sample-generating tasks.
Having watched a you-tube on cc-rider usage, I believe I can accomplish what I want by creating synth samples with the status (looping) LFO using a low BPM in DAW, then make an SFZ of it. A "one-shot" CC-rider option would be nice long term; as to use it real-time we can put the synth in mono mode, yet retain polyphony in unify with Polybox and multiple synth instances. Thanks for the quick reply!