Adaptive filtering of physiological signals using a modeled synt

Details Adaptive filtering of physiological signals using a modeled synt Adaptive filtering of physiological signals using a modeled synt

1999-01-29

2000-10-24

Winakur, Eric F.

Surgery

Diagnostic testing

Measuring or detecting nonradioactive constituent of body...

A61B 500

Patent

active

061359521

ABSTRACT:
An adaptive filtering method and apparatus for reducing the level of an undesired noise component in an acquired physiological signal having a desired signal component. The acquired physiological signal is applied to one input of the adaptive filter, and a synthetic reference signal that is modeled so as to exhibit a correlation with the desired signal component is applied to another input of the adaptive filter. Thereafter, in a feedback manner, the adaptive filter iteratively adjusts the modeled synthetic reference signal so as to progressively generate a more accurate approximation of the desired signal component in the adaptive filter, which approximation becomes a reconstruction of the acquired physiological signal wherein the level of the undesired noise component is reduced.

REFERENCES:
patent: 5687722 (1997-11-01), Tien et al.
patent: 5692505 (1997-12-01), Fouts
patent: 5853364 (1998-12-01), Baker, Jr. et al.

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