Our results of analyzing effects made by electrode characteristics on the accuracy of the ECG signal parameters formation are presented herein. Analyzed is a correlation between the measured characteristics of the electrodes and a probability value that determines accuracy of the ECG signal parameters formation. With the help of scatter plots demonstrated is the strength of the correlation between the assessed variables. Our analysis of the obtained results shows that the harder is the contact agent in an electrode, the more accurate are the formed ECG signal parameters.
The article describes a solution of the ECG signal processing problem in the presence of low- and high- frequency noises, which reduce the accuracy of selection of the signal informative parameters during their processing. To increase the accuracy of the signal informative parameters selection, developed is a new method for noise filtering based on a polynomial approximation of high frequency filters and wide-band reject filters using Newton polynomials.