Title :
Double logarithmic quantisation of the Walsh spectrum: application to real ECGs
Author :
Berti, E. ; Chiaraluce, F. ; Evans, N.E. ; McKee, J.J.
Author_Institution :
Gen. Impianti, Moie di Maiolati, Italy
fDate :
8/28/1997 12:00:00 AM
Abstract :
The efficiency of ECG compression is confirmed using double logarithmic quantisation of the Walsh spectrum by applying it to practical signals sourced from the MIT/BIH arrhythmia database. By classifying a compression procedure as `good´ when its MSE for a spectral reduction of 1:1 is smaller than 0.005, the normal/abnormal ECG mix returned an overall 87% success rate for waveforms stored with between 8 and 11 bit resolution
Keywords :
Walsh functions; data compression; electrocardiography; medical signal processing; quantisation (signal); signal resolution; 8 to 11 bit; ECG compression; MIT/BIH arrhythmia database; MSE; Walsh spectrum; compression procedure; double logarithmic quantisation; resolution; spectral reduction; success rate;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19971021
