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:
“She smoothes her hair with automatic hand,
And puts a record on the gramophone.”
—T.S. (Thomas Stearns)
“They had their fortunes to make, everything to gain and nothing to lose. They were schooled in and anxious for debates; forcible in argument; reckless and brilliant. For them it was but a short and natural step from swaying juries in courtroom battles over the ownership of land to swaying constituents in contests for office. For the lawyer, oratory was the escalator that could lift a political candidate to higher ground.”
—Federal Writers’ Project Of The Wor, U.S. public relief program (1935-1943)
“The poets were not alone in sanctioning myths, for long before the poets the states and the lawmakers had sanctioned them as a useful expedient.... They needed to control the people by superstitious fears, and these cannot be aroused without myths and marvels.”
—Strabo (c. 58 B.C.–c. 24 A.D., Greek geographer. Geographia, bk. 1, sct. 2, subsct. 8.