Dubdown

In this application, the loudspeaker monitor is the standard by which recordings are judged—from initial microphone placement, through mixing and dubdown, to final mastering.

Source: wiktionary

Full bandwidth digitally recorded images don't pick up random analog noise during dubdown, but they can add "quantizing noise" (detectable rings separating areas of different luminance intensities).

Source: wiktionary

You certainly should have the final dubdowns of your playbacks from the sixteen track to the three-stripe 35mm.

Source: wiktionary

It's true that “Barnyard” only exists as a poor second generation copy, a dubdown to mono recorded onto one track of an otherwise blank 8-track/one inch tape.

Source: wiktionary