Accession Number : AD0678163

Title :   DIGITAL FILTERING WITH APPLICATIONS TO ELECTROCARDIOGRAM PROCESSING.

Descriptive Note : Technical rept.,

Corporate Author : STANFORD UNIV CALIF STANFORD ELECTRONICS LABS

Personal Author(s) : Weaver,C. S. ; von der Groeben,J. ; Mantey,P. E. ; Toole,J. G. ; Cole,C. A.

Report Date : JUN 1968

Pagination or Media Count : 111

Abstract : The first part of this paper is a description of the design of lowpass, bandpass, highpass, and notched filter difference equations using Z-transform techniques. The difference equation coefficient word lengths are significantly reduced by using a set of second-order difference equations. These equations have a form that minimizes computation. The second part of the paper contains applications of these filters to the processing of electrocardiograms (ECG). The filters are included as subroutines in a program that also includes an adaptive muscle tremor filter, an 'optimum' ECG estimator, and optimum estimators for the arrival time of various parts of the ECG waveform. Clinical results are presented. (Author)

Descriptors :   (*ELECTROCARDIOGRAPHY, DATA PROCESSING), HEART, DIAGNOSIS(MEDICINE), PATTERN RECOGNITION, DIFFERENCE EQUATIONS, MUSCLES, INFORMATION THEORY, INTEGRAL TRANSFORMS, TRANSFER FUNCTIONS, ADAPTIVE SYSTEMS, FLOW CHARTING, COMPUTER PROGRAMS

Subject Categories : Medicine and Medical Research

Distribution Statement : APPROVED FOR PUBLIC RELEASE