Heart sound tracking system and method

摘要

A system and method provide heart sound tracking, including an input circuit, configured to receive heart sound information, and a heart sound recognition circuit. The heart sound recognition circuit can be coupled to the input circuit and can be configured to recognize, within a particular heart sound of a particular heart sound waveform, a first intra heart sound energy indication and a corresponding first intra heart sound time indication using the heart sound information from the particular heart sound waveform and the heart sound information from at least one other heart sound waveform. The particular heart sound can include at least a portion of one of S1, S2, S3, and S4. Further, the first intra heart sound energy indication and the corresponding first intra heart sound time indication can correspond to the at least a portion of one of S1, S2, S3, and S4, respectively.

主权项

1. A method for identifying a heart sound in a heart sound waveform, the method comprising:
identifying one or more first candidate heart sounds in a first heart sound waveform, each of the one or more first candidate heart sounds including corresponding first time and first energy features; identifying two or more second candidate heart sounds in a second heart sound waveform, each of the two or more second candidate heart sounds including corresponding second time and second energy features; and using a cost analysis circuit:
determining a temporal cost for each of the second time features of the two or more second candidate heart sounds relative to each of the first time features of the one or more first candidate heart sounds;determining a score for each of the two or more second candidate heart sounds using the determined temporal cost for each candidate; anddiscriminating between the two or more second candidate heart sounds, based on the determined scores, to provide an identifier indicating a detected heart sound.