The study of properties Savitzky-Golay polynomial smoothing filter for electrocardiogram signal processing
List of Authors
  • Nur Sukinah Aziz , Ziti Fariha Mohd Apandi

Keyword
  • Savitzky Golay, Filtering, Smoothing, Noisy ECG Signal, Electrocardiogram, Signal Noise to Ratio

Abstract
  • Many types of processing techniques have been proposed to improve the performance of biomedical signal with noise. The Savitzky-Golay (SG) filters is one of the techniques used in filtering noise which can smoothen out the signal without much destroying its original properties. Despite their exceptional features they were rarely used so far in the ECG signal processing. The principle behind S-G filter is to obtain the appropriate Polynomial degree fitting order and frame size properties since the performance of filter mostly depends on them. Thus, the appropriate properties of S-G filter in noisy signal needs to be examined. In this study, combination between band-pass filter and S-G filter is implemented. The implementation has been applied S-G filter on the noisy ECG signal with different Signal to noise ratio and artefacts. The aim of this paper is the investigation of S-G filter properties in detail from the ECG signal processing aspect. The comparison of properties of S-G filter on ECG signal with different signal of noise ratio are also discussed. The parameters which provide the highest correlation coefficient are considered for filter design.

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