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7. Specific types of filters used commonly include the Butterworth filter (q.v.), a band-pass filter design with flat response, and the Chebychev filter (Tchebyscheff filter), a band-pass filter with a steep rolloff, characterized by a uniform ripple in the pass band. 8. See also inverse filter [1]. Stacking is a filtering process.

  1. Sheriff, R. E; Geldart, L. P (August 1995). Exploration Seismology, 2nd Ed. Cambridge Univ. Press. p. 284, 292, 550. ISBN 9780521468268.