Waldmann, FrédéricBaeriswyl, ChristofAndonie, RaphaelWildhaber, Reto2023-02-162023-02-162022-09-022364-550410.1515/cdbme-2022-1027https://irf.fhnw.ch/handle/11654/34632https://doi.org/10.26041/fhnw-4645Bioelectrical 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.enLinear state space modelsRecursive least squaresLikelihoodFeature extractionOnset detectionEcg waves600 - Technik, Medizin, angewandte Wissenschaften01A - Beitrag in wissenschaftlicher Zeitschrift101-104