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Algorithm for automatic recognition of a seismic signal by a computer
Author(s) -
Naimark B. M.
Publication year - 1965
Publication title -
reviews of geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 8.087
H-Index - 156
eISSN - 1944-9208
pISSN - 8755-1209
DOI - 10.1029/rg003i001p00187
Subject(s) - amplitude , noise (video) , signal (programming language) , energy (signal processing) , acoustics , seismic noise , identification (biology) , computer science , background noise , speech recognition , seismology , geology , physics , mathematics , statistics , artificial intelligence , optics , botany , image (mathematics) , biology , programming language
Four criteria are supplied to a computer for deciding whether a seismic signal is present amid background noise. These criteria are those of (1) high energy, (2) rapid rate of change of amplitude, (3) short periods, and (4) a combination of short period and large amplitude. If a certain threshold is exceeded in any one of the four tests, an identification is made. For real signals artificially added to real noise, positive identification was made in every one of 27 tests for signals having peak amplitudes as low as one‐half the peak noise amplitude.