Binary gain refers to a seismic digital-recording system that switches gain for each seismic channel in steps of two in response to changes in signal energy. This technique allows data recovery with low distortion. Applications of the binary-gain system are likely in seismic data processing requiring data-shape recovery. Such applications may arise in stratigraphic-trap problems and in problems requiring true amplitude recovery. Examples of seismic-energy decay and binary-gain stepping are shown as a means of introducing SAR (synthetic amplitude recovery). SAR is used to gain control of the data while preserving the character of individual events.

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