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  • Print publication year: 2020
  • Online publication date: December 2019

5 - Seismic Applications of Digital Filtering Theory

from Part II - Deterministic Digital Signal Processing for Seismic Data

Summary

Seismic applications of digital filtering theory are presented in this chapter. 1-D FIR and/or IIR digital filters, such as low-pass or band-pass, are used heavily to enhance the signal-to-noise (SNR) ratio of acquired seismic data. Furthermore, 2-D digital filters like fan filters have become standard in removal of surface waves accompanying seismic data records. Solving the wave equation numerically may also require using FIR or IIR digital filters such as the explicit depth wavefield extrapolation filters.