Computer Equalization of Low-Frequency Components in Tape Recorded Electrocardiographic Signals
ROBERT C. ARZBAECHER, Melvin D. Woolsey, Daniel A. Brody · IEEE Transactions on Biomedical Engineering · 1967
Low-frequency equalization of a digitized electrocardiographic waveform has been accomplished by adding to the waveform several of its integrals, appropriately weighted. The weighting factors required for correction of distortion produced by a particular amplifier are initially obtained from a least squares correction of its step response. Neither analysis of the amplifier circuit, nor frequency-response testing is necessary.