Article
Article
Fidelity
Article By:
Eargle, John M. Formerly, JME Consulting Corporation, Los Angeles, California.
Last reviewed:January 2020
DOI:https://doi.org/10.1036/1097-8542.256100
The overall input-output accuracy of a signal storage or transmission system. Many attributes contribute to fidelity. In an audio recording-playback system, some of the individual attributes are distortion, bandwidth, signal-to-noise ratio, group delay, and loudspeaker dispersion. Most system designers would agree that noise and distortion are of chief importance. The fidelity of video systems depends on many attributes, including optical quality, bandwidth, dynamic range, and phosphor brilliance, whereas that of a motion picture system depends on optical quality, mechanical stability in camera and projector, and the exposure-density relationships of the film. See also: Distortion (electronic circuits); Electrical noise; Signal-to-noise ratio
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