Reduction of Walsh-transformed electrocardiograms by double logarithmic coding

Author

Berti, E. ; Chiaraluce, F. ; Evans, N.E. ; McKee, J.J.

Author_Institution

Gen. Impianti, Moie di Maiolati, Italy

Volume

47

Issue

11

fYear

2000

Firstpage

1543

Lastpage

1547

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≤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.

Keywords

Walsh functions; data reduction; electrocardiography; encoding; medical signal processing; MIT/BIH arrhythmia database signals; Walsh spectrum double logarithmic quantization; Walsh-transformed electrocardiograms; double logarithmic coding; electrocardiogram ECG data reduction method; electrodiagnostics; good compression; nonuniform quantitation; normal/abnormal ECG mix; simulated ECG; spectral reduction; Acoustic noise; Biomedical measurements; Energy measurement; Frequency; Jitter; Laser noise; Noise level; Noise measurement; Signal resolution; Wavelet transforms; Arrhythmias, Cardiac; Biomedical Engineering; Biometry; Data Interpretation, Statistical; Electrocardiography; Humans;

fLanguage

English

Journal_Title

Biomedical Engineering, IEEE Transactions on

Publisher

ieee

ISSN

0018-9294

Type

jour

DOI

10.1109/10.880108

Filename

880108