Higher Order Crossings

Abstract

Progress in the higher order crossings (HOC) method included development of 'contraction mapping' for the estimation of discrete frequencies in noise. Parametric filters allow the estimates to attain high precision. Reports and papers on this technique are listed, and applications to the discrimination of metal plates has begun.

Keywords

*FREQUENCY
*GAUSSIAN NOISE
*ACOUSTIC FILTERS
*CROSSINGS
PARAMETRIC ANALYSIS
THRESHOLD EFFECTS
STOCHASTIC CONTROL
PRECISION
METAL PLATES
ESTIMATES
TIME SERIES ANALYSIS
AUTOCORRELATION

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