signal-to-noise [S/N]« BACK TO DICTIONARY INDEX
(adj.) Describes the ratio between the strength of an audio or a video signal and the measurable amount of noise, or the undesirable interference, it has picked up in transfer. Higher S/N ratios mean higher-quality signals. Each generation of a tape dub has a lower S/N ratio. Digital media can achieve much higher S/N ratios than analog media can, and degradation does not occur in digital copies.