Recently, there has been growing utilization of time-frequency transformations for the analysis and interpretation of nonlinear and nonstationary signals in a broad spectrum of science and engineering applications. The continuous wavelet transform and empirical mode decomposition in tandem with Hilbert transform have been commonly utilized in such applications, with varying success. This study ...

This document is meant to help individuals use the Cerebral Signal Phase Analysis toolbox which implements different methods for estimating the instantaneous phase and frequency of a signal and calculating some related popular quantities. The toolbox – which is distributed under the terms of the GNU GENERAL PUBLIC LICENSE as a set of MATLAB R © routines – can be downloaded at the address http:/...

To investigate fluctuations in the wavefront aberrations of the eye and their relation to pulse and respiration frequencies we used a wavefront sensor to measure the dynamics of the Zernike aberrations up to the polynomial fourth radial order. Simultaneously, the subject's pulse rate was measured, from which the instantaneous heart rate was derived. We used an auto-regressive process to derive ...

The synthesis method of the incoherent demodulation procedure two synchronous mutually non-orthogonal digital signals with frequency modulation is considered. In absence interference this degenerates into classical a signal modulation. When instantaneous power one significantly exceeds other, immunity latter approaches reception in channel additive white Gaussian noise without interference. Thi...

Abstract INTRODUCTION: Deep brain stimulation (DBS) is widely used to alleviate symptoms of movement disorders. During intraoperative the influence active or passive movements on neuronal activity often evaluated but evaluation remains mostly subjective. The objective this paper investigate potential a previously developed Weighted-frequency Fourier Linear combiner and Kalman filter-based recur...

Fast parameter estimation of sinusoidal frequency modulation signal (SFM) in additive white Gaussian noise is considered. A technique based on Carson's rule is developed to estimate the frequency modulation index; the carrier frequency is calculated using the symmetrical property of side-frequency components; the instantaneous frequency is computed to get the modulation frequency. The Cramér-Ra...