title: Reduction of Walsh-transformed electrocardiograms by double logarithmic coding.
abstract: This work presents an electrocardiogram ECG data reduction method based on Walsh spectrum double logarithmic quantization. The technique is theoretically justified for a simulated ECG and its practical efficiency confirmed using MIT/BIH arrhythmia database signals. By classifying a "good" compression as one with MSE < or = 0.005 for 1:1 spectral reduction, a normal/abnormal ECG mix returned an 87% success rate for waveforms stored with 8- to 11-bit resolution.
authors.affiliation: General Impianti, Moie di Maiolati, AN, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Berti
authors.forename: F
authors.initials: F
authors.lastname: Chiaraluce
authors.forename: N E
authors.initials: NE
authors.lastname: Evans
authors.forename: J J
authors.initials: JJ
authors.lastname: McKee
mesh_terms: D001145:Arrhythmias, Cardiac / Q000175:diagnosis / Q000503:physiopathology; D001698:Biomedical Engineering; D001699:Biometry; D003627:Data Interpretation, Statistical; D004562:Electrocardiography / Q000706:statistics & numerical data*; D006801:Humans