Wildhaber, Reto

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Wildhaber, Reto

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Onset detection of pulse-shaped bioelectrical signals using linear state space models

2022-09-02, Waldmann, Frédéric, Baeriswyl, Christof, Andonie, Raphael, Wildhaber, Reto

Bioelectrical signals are often pulse-shaped with superimposed interference signals. In this context, accurate identification of features such as pulse onsets, peaks, amplitudes, and duration is a frequent problem. In this paper, we present a versatile method of rather low computational complexity to robustly identify such features in real-world signals. For that, we take use of two straight-line models fit to the observations by minimizing a quadratic cost term, and then identify desired features by tweaked likelihood measures. To demonstrate the idea and facilitate access to the method, we provide examples from the field of cardiology.