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In this paper, we present a method of detecting the splitting of heart sound S2 based on a template matching approach. A mathematical model of normal S2 is created and tested on other normal S2 complexes for goodness of fit. The generalized mathematical model is used as a template for detecting splitting of S2 sounds, as they will not generate a good fit with a model of a normal S2 complex. This automated detection of splitting of S2 can be used in the detection of congenital heart diseases or pulmonary hypertension. We have provided an estimate of the fit results of the mathematically synthesized S2 complex with the split S2 complexes.

A Fourier series based Template Matching Approach to Detect the Splitting of Second Heart Sound