Abstract
Automatic processing and analysis of electrocardiogram (ECG) signals are related to various applications and aspects of cardiovascular system research. One of such tasks is ECG monitoring, which is one of the most important functions of cardiological monitoring implemented by devices and systems for monitoring the body’s condition, monitoring cardiac activity, and functional studies of the cardiovascular system. The article presents the results of an ECG device signal study using Matlab. The ECG signal noise level was assessed in order to exclude highly noisy fragments from it, and informative components were identified to ensure the best conditions for further signal processing.