METHODS AND SYSTEMS FOR PROCESSING PHYSIOLOGICAL SIGNALS

摘要

A physiological monitoring system may determine physiological information, such as physiological rate information, and other information, such as noise information, from a physiological signal. The system may generate a difference signal based on the physiological signal and sort the difference signal to generate a sorted difference signal. The system may determine a value indicative of noise based on one or more data points identified from the sorted difference signal. The system may also condition physiological data to assist in the determination of the physiological information. The system may calculate differences based on the physiological data and modify the physiological data based on differences that exceed a threshold. The system may also apply a digital filter to physiological signal to assist in the determination of the physiological information. The filter may be adjustable, allowing selectivity in the characteristics of the digital filter between weighting the physiological signal and a difference signal.