Ormsby filter

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A common type of synthetic wavelet in reflection seismology.


  • f1 = low-cut frequency
  • f2 = low-pass frequency
  • f3 = high-pass frequency
  • f4 = high-cut frequency

An example might have frequencies of 5–10–40–45 Hz. This defines a trapezoidal shape in the frequency spectrum.

Ormsby-filtered wavelets have several sidelobes, unlike Ricker wavelets which only have two, one either side.

See also

External links

  • Ryan, H (1994). Ricker, Ormsby, Klauder, Butterworth — A choice of wavelets. CSEG Recorder 19 (7). Available online.
  • Ormsby filter — Sheriff's Encyclopedic Dictionary

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