Patent ID: 8554517

Claim:
A physiological signal processing method for an ambulatory monitoring system, comprising the steps of: comparing by the ambulatory monitoring system peak width properties of physiological signals with distinguishing peak width properties of good, noisy and weak signals; classifying by the ambulatory monitoring system at least one of the physiological signals as good based on at least one of the comparisons; and processing by the ambulatory monitoring system the at least one physiological signal in accordance with the classification, wherein the at least one physiological signal is classified as good in response to a determination that a central peak of the at least one physiological signal has a width between a low central peak width threshold and a high central peak width threshold and a determination that a non-central peak of the at least one physiological signal has a width above a non-central peak width threshold, and wherein physiological data are extracted from the at least one physiological signal and outputted in response to classifying the at least one physiological signal as good.