"gradiated reverse ducking" sounds like a description of an envelope follower : it continually follows the envelope of one track & applies it to another track , (not just kicking-in at a threshold, as ducking does).
![Envelope-follower, applied to constant white-noise [0-01 time resolution, follow peaks].gif](/uploads/default/original/2X/7/70d335a132b9734a5bcd007b29a49612aacceb47.gif)
"gradiated reverse ducking" sounds like a description of an envelope follower : it continually follows the envelope of one track & applies it to another track , (not just kicking-in at a threshold, as ducking does).