David C. Farden

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The R-R interval measurement from digitized electrocardiograms (ECG) contains an error due to the finite sampling frequency which may jeopardize the beat-to-beat analysis of the heart rate. In this paper, we develop a model to describe and quantitate this error. The "measured" R-R interval is modeled as the sum of the "true" R-R interval and of the error of(More)
The solution of a set of m linear equations Ls = d, where L is an mth order Hermitian Toeplitz matrix and the elements of d possess a Hermitian symmetry, is considered. A specialized algorithm is developed for this case which solves for s in approximately 1.5m ~ "operations," whereas the Hermitian case of an algorithm developed by Zohar solves for s in(More)