Baseline Wandering Removal in ECG Signal Using Filters

Abstract

The electrocardiogram (ECG) signals consists numerous kinds of noises; they are "electromyographic (EMG) noise, baseline wander (BW), electrode motion artefact, and power line interference". The EMG noise will be high frequency noise of above 100Hz & might be eliminated by a LPF of "suitable cut-off frequency". The BW will be low frequency noise of 0.5 to 0.6 Hz. To avoid it, HPF with "cut off frequency" 0.5 to 0.6 Hz might be utilized. The electrode motion artefacts might be suppresses through decreasing movements mad by subject. The power line interference might be eliminated by utilizing "notch filter of 50 or 60Hz cut-off frequency". This scheme prominence on diverse kinds of basic noise sources in ECG signals &applies easy signal processing methods for eliminating them, alongside amplification of information to 1x,2x,3x,4x and amplifying it accurately without losing the clinical centrality.