Structure Analysis of the Wavelet Spectrum of Quasi-Periodic ELF Signals of Natural Origin

摘要

The paper proposes a method for analyzing wavelet spectrum of quasi-periodic signals using the coefficient of variation (CV) of the wavelet coefficients. The informative significance of the wavelet coefficients of biomedical signals is investigated. It is shown that for classifying the sphygmograms into groups according to similar dynamics of changes in spectral components, it is necessary to use wavelet coefficients at frequencies of 12.5, 17.5, 23.7 Hz.