USING RELATED SIGNALS TO REDUCE ECG NOISE

摘要

A method of reducing noise in a signal that represents a physiologic process includes obtaining multiple input signals (205), measuring a relationship between noise content of the input signals (210-225), and combining the input signals in consideration of the measured relationship to produce an output signal having a low noise content (230). The multiple input signals may include, for example, two or more primary physiologic input signals or one or more primary physiologic input signals and two or more secondary input signals that represent noise. The method may further include dividing one or more ECG input signals and secondary input signals into a set of segments, where each set of segments represents a beat of the ECG signal, measuring a relationship between noise content of corresponding points from successive sets of segments, and combining the input signals based on the measured relationship.