Analog or digital?
So the answer is…both ! 
Several good answers, you all won 2 free samples !
An acoustic sound digitalized as original file, played as a single cycle with OT, triggered by a midi track with midi loopback, that midi track triggering A4’s filter, OT plugged in it.
A4’s digital fx, recorded with OT.
Original file : anal.ogg
That sound can’t be more analog ! 