chopping
n.— «DJ Screw made a legit production style from the practice of slowing tracks way down for a woozy, drugged-out effect. This “screwing,” which naturally couldn’t really exist too long as a singular rap technique due to its novelty factor, was paired with “chopping,” which is the application of a variety of fucked-up sound effects to the stretched-out cadence of the screwed track.» —“Ice Work If You Can Get It” by Kate Carraway Orange County Weekly (California) Apr. 5, 2007. (source: Double-Tongued Dictionary)