POSC Specifications: Epicentre Version 3.0 Logical Data Model

WAVELET_OR_FILTER (C037, C038, C050, C053, C056, C112, C138)

(Rules) (Express)

A wavelet (W) or digital filter (F) are differentiated in terms of their effects on a physical process and to data representing it. In seismic, the physical process is a reflection series (R) and the data are the seismic trace values (T). The wavelet is defined by W*R = T and the digital filter by R = F*T, where * represents convolution. A filter is the inverse of a wavelet. Either a wavelet or a filter can be described in terms of both its frequency spectrum and time spectrum. A parametric description of a "notch" response will have a negative value for low cut rate and a positive value for high cut rate.


Local rules:

Supertype path(s):

Entity projects as table WAVELET_OR_FILTER.

Referenced in Diagrams:


Generated on Tue Jul 10 15:55:37 2001
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