Real-time drift suppressor for ECG.
By introducing poles close to the zeros of the transfer function (1 - Z-N), a drift filter is formed which involves only simple addition and shifting operations and is therefore capable of real-time application with moderate speed microprocessors. A normal ECG with moderate baseline fluctuations showed satisfactory drift suppression with minimal observable T-wave distortion.
Choy
T T
TT
Department of Electronics, Chinese University of Hong Kong, Shatin, N.T.
Leung
P M
PM
D004562:Electrocardiography / Q000295:instrumentation / Q000379:methods*; D004867:Equipment Design; D008838:Microcomputers; D012815:Signal Processing, Computer-Assisted; D013997:Time Factors