Automatic gain control (AGC)
Helgert, Hermann J. Department of Electrical and Computer Engineering, George Washington University, Washington, DC.
Last reviewed:October 2019
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The automatic maintenance of a nearly constant output signal level of an amplifier circuit in the presence of a variable input signal level by adjusting its gain in inverse proportion to the input signal level. Automatic gain control (AGC) is also known as automatic volume control (AVC).
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