1. n. [Geophysics]

The portion of the seismic wave that contains desirable information. Noise is the undesirable information that typically accompanies the signal and can, to some extent, be filtered out of the data.

See: acoustic coupler,  acquisition,  aliasing,  autocorrelation,  bel,  check-shot survey,  coupling,  decibel,  dynamic range,  filter,  filter,  frequency,  inversion,  noise,  polarity standard,  processing,  signal-to-noise ratio,  Stoneley wave,  traveltime,  zero crossing