Prelay

He'll be responsible for prelaying sound effects for film and television.

In this way, dialog, music and effects elements can be prelaid to hard disk or MO […]

If your show includes a lot of effects, for example, explosions, music, sound effects, or loud noises over romantic dialogue, then your sound-effects supervisor will probably recommend a predub or prelay.

An optimum method for feeding calcium is to start feeding the layer level (3.25% or more) slightly before the first egg, because after hens start laying there is a negative calcium balance when consuming the prelay calcium level of 2.0%.