Automatic gain control (AGC) is an adaptive system found in many electronic devices. The average output signal level is fed back to adjust the gain to an appropriate level for a range of input signal levels. For example, without AGC the sound emitted from an AM radio receiver would vary to an extreme extent from a weak to a strong signal; the AGC effectively reduces the volume if the signal is strong and raises it when it is weaker.
Famous quotes containing the words automatic, gain and/or control:
“Predictions of the future are never anything but projections of present automatic processes and procedures, that is, of occurrences that are likely to come to pass if men do not act and if nothing unexpected happens; every action, for better or worse, and every accident necessarily destroys the whole pattern in whose frame the prediction moves and where it finds its evidence.”
—Hannah Arendt (1906–1975)
“If I were to be taken hostage, I would not plead for release nor would I want my government to be blackmailed. I think certain government officials, industrialists and celebrated persons should make it clear they are prepared to be sacrificed if taken hostage. If that were done, what gain would there be for terrorists in taking hostages?”
—Margaret Mead (1901–1978)
“Culture means control over nature.”
—Johan Huizinga (1872–1945)