SIGNAL SEGMENTATION AND ANALYSIS

摘要

The present invention provides a system and method for representing quasi-periodic (“qp”) waveforms comprising, representing a plurality of limited decompositions of the qp waveform, wherein each decomposition includes a first and second amplitude value and at least one time value. In some embodiments, each of the decompositions is phase adjusted such that the arithmetic sum of the plurality of limited decompositions reconstructs the qp waveform. These decompositions are stored into a data structure having a plurality of attributes. Optionally, these attributes are used to reconstruct the qp waveform, or patterns or features of the qp wave can be determined by using various pattern-recognition techniques. Some embodiments provide a system that uses software, embedded hardware or firmware to carry out the above-described method. Some embodiments use a computer-readable medium to store the data structure and/or instructions to execute the method.

主权项

1. An apparatus comprising:
a computer having a storage unit; a receiver operatively coupled to the computer and configured to obtain a digitized signal having a series of digital values of a quasi-periodic waveform and to store the series of digital values in the storage unit, wherein the quasi-periodic waveform includes a cardiac signal; a state generator operative coupled to generate a series of states defined by phase relationships between a plurality of frequency components of the cardiac signal based on the stored series of digital values; and an automatic segment generator configured to automatically output representations of segments of the cardiac signal based on the series of states.