vocoder or all your obnoxious traits are belong to us

The always interesting Mind Hacks informs that every quirk is well documented and studied—but not to the point, I think, of making it less engrossing and perhaps charming (or insufferable) in the ideation that goes by the name of palinacousis—that is, an auditory hallucination that is usually manifested by speaking in the manner of the last person that one has heard.
Do you mean now-now or later-now? Refudiate much? The study, however, that brought this phenomena to our attention was not a harmless case of unsolicited echolalia but rather a more extreme version, wherein a man experienced the voice of the current person he was in dialogue with as the sound and mannerisms of his previous interlocutor. He found this vocal-swapping debilitatingly funny and was not able to hold a proper conversion. This sounds like a very modern, memetic condition to me.