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automatic gain control

1. n. [Geophysics]

A system to automatically control the gain, or the increase in the amplitude of an electrical signal from the original input to the amplified output.

AGC is commonly used in seismic processing to improve visibility of late-arriving events in which attenuation or wavefront divergence has caused amplitude decay.

Alternate Form: AGCAGC time constant

See: eventprocessingQ

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