Title :
Enhancement of surface His activity with adaptive filtering
Author :
Cano, Gerald G. ; Briller, Stanley A.
Author_Institution :
Allegheny Singer Res. Inst., Pittsburgh, PA, USA
Abstract :
Adaptive filtering is used to enhance His activity in individual beats in signals acquired from the surface of the body. Signals are high-pass filtered to remove T-waves. Common mode signals are reduced with a separate continuous adaptive filter specifically for this purpose. Random noise is reduced with a time-sequenced adaptive filter with parameter updating both on the preceding and current beat. To reduce effects of parameter biasing, an average of filter parameters is computed during periods of no activity in each beat and subtracted from all parameters
Keywords :
electrocardiography; signal processing; T-wave removal; adaptive filtering; common mode signals; high-pass filtering; parameter biasing; random noise reduction; surface His activity enhancement; Adaptive filters; Catheters; Electrocardiography; Electrodes; Error correction; Frequency; Noise reduction; Signal processing; Signal to noise ratio; Working environment noise;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.95552
