Predictable signal components carry no information and can be recomputed rather than stored

Evidence

To maximize the information content of the signal, we should aim to remove the predictable parts, because they can be recalculated at the receiving end, and only encode the unpredictable part, because this represents the new information. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2602

Categorization

• XREF: Connects to information theory and Shannon-style redundancy: the same logic underlies why repeated ambient sound becomes inaudible background.