Selection of preset filter parameters based on signal quality

Details Selection of preset filter parameters based on signal quality Selection of preset filter parameters based on signal quality

G - Physics

06

F

G06F 17/00 (2006.01) A61B 5/00 (2006.01) A61B 5/021 (2006.01) A61B 5/024 (2006.01)

Patent

CA 2512579

Methods and devices for reducing noise effects in a system for measuring a physiological parameter, including receiving an input signal; obtaining an assessment of the signal quality of the input signal; selecting coefficients for a digital filter using the assessment of signal quality; and filtering the input signal using the digital filter, without comparing the filter's output signal with the input signal.

La présente invention concerne des procédés et des dispositifs permettant de réduire les effets du bruit dans un système de mesure d'un paramètre physiologique. Ce procédé consiste à recevoir un signal d'entrée, à obtenir une évaluation de la qualité de signal de ce signal d'entrée, à sélectionner des coefficients d'un filtre numérique au moyen de cette évaluation de qualité de signal et, à filtrer le signal d'entrée au moyen du filtre numérique, sans comparer le signal de sortie du filtre avec le signal d'entrée.

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