Reliable Triggering for Exercise Electrocardiograms

The heavy noise content in many exercise electrocardiograms has hindered the development of diagnostic analysis techniques. Many of the computational methods require a reliable and minimumly variable time reference within each ECG cycle. For example, such a trigger signal is a prerequisite to average transient computing, and can also relieve a digital computer of the timeconsuming task of digital filtering in the initial pattern recognition of R-waves.