signal:noise ratio

sig·nal:noise ra·ti·o

the relative intensity of a signal to the random variation in signal intensity, or noise; used to evaluate many imaging techniques and electronic systems.

sig·nal:noise ra·ti·o

(sig'năl-noyz' rā'shē-ō)
The relative intensity of a signal to the random variation in signal intensity, or noise; used to evaluate many imaging techniques and electronic systems.