MATLAB based ECG signal noise removal and its analysis

Heart disease is one of the significant reason of death worldwide. One of the effective ways to diagnose heart disease is the electrocardiogram (ECG). The electrical functioning of the heart is translated into a waveform, which is utilized to find the condition of the heart. This paper deals with the ECG noise removal and its analysis in MATLAB environment. This work includes ECG analysis which consists of three main basic steps. The first step is receiving recorded ECG signal. The received raw ECG is corrupted with various kinds of noise such as powerline interference, baseline drift, patient electrode motion so the second step includes elimination of these noises from the signal. The third step includes development of algorithm for finding various peaks and detection of intervals between those peaks in MATLAB environment. The algorithm used in this work is very efficient and it can be easily implemented on ECG signal. The result obtained can be used for clinical diagnosis by the physician and will be very helpful in finding various abnormalities in the heart.