Using CELP for compression of ECG signals

Author

Ribbum, Bernt

Author_Institution

Dept. of Electr. & Comput. Eng., Stavanger Coll., Norway

Volume

4

fYear

1996

fDate

31 Oct-3 Nov 1996

Firstpage

1380

Abstract

A parametric coder of the Code Excited Linear Prediction (CELP) family in presented, aimed at coding of digitised electrocardiograms (ECG). Identifying the various parts of an ECG is done to assess the coder performance on a subjective scale. This is used to adjust the parameters of the CELP to better fit the signal. Variants of the CELP are presented, especially designed fur ECG coding; this includes a “copy” long term predictor and a recursive search in the VQ codebook, both resulting in a variable bitrate. Using the percent root-mean-square distortion measure, the coder is shown to deliver results around 7.6% at a mean rate of 2.1 bits per sample. This is on par with or above coders reported elsewhere. The coders presented are shown to be very robust

Keywords

electrocardiography; linear predictive coding; medical signal processing; vector quantisation; CELP use; ECG signal compression; VQ codebook; coder performance; copy long term predictor; digitised electrocardiograms; hybrid CELP; parametric coder; percent root-mean-square distortion measure; recursive search; robust coders; subjective scale; variable bitrate; Bit rate; Data compression; Distortion measurement; Electrocardiography; Engineering in Medicine and Biology Society; Filters; Linear predictive coding; Rhythm; Robustness; Speech;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1996. Bridging Disciplines for Biomedicine. Proceedings of the 18th Annual International Conference of the IEEE

Conference_Location

Amsterdam

Print_ISBN

0-7803-3811-1

Type

conf

DOI

10.1109/IEMBS.1996.647464

Filename

647464