Abstract: A method and apparatus for performing pattern analysis of a digital signal containing at least one waveform, detects a fiducial point of each waveform of the digital signal; captures slope transition features separated by interval features of each of the waveforms of the digital signal; creates a signature for each waveform based on the captured slope transition and interval features of each of said waveforms; determines the closest proximity of the signature to one of a plurality of previously determined classifications of signatures; creates a new classification with the signature if the closest proximity has a value less than a predetermined threshold value; and adds the signature to the closest classification if the closest proximity has a value at least equal to the predetermined threshold value.