output-to-input ratio

English Thesaurus

1. the output power of a transducer divided by the input power (noun.linkdef)

hypernym	:	ratio,
definition	:	the relative magnitudes of two quantities (usually expressed as a quotient) (noun.linkdef)

part meronym	:	frequency response,
definition	:	(electronics) a curve representing the output-to-input ratio of a transducer as a function of frequency (noun.attribute)