POSC Specifications: Epicentre Version 3.0 Relational Implementation

WAVELET_OR_FILTER (WAVELET_OR_FILTER)

(DDL)

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.

Table is related to: data_collection_content, document_specification_part, geophysical_fcl_spectral_desc, @graphical_element, process_data_item

Primary Key Constraint on: INSTANCE_S

Generated on Tue Jul 10 17:11:14 2001
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