Automatic heart sound segmentation analysis method

The invention provides an automatic heart sound segmentation analysis method, and relates to the technical field of heart sound analysis processing. The method comprises the following steps: S1, obtaining a heart sound period through a plurality of methods; S2, positioning a heart sound period valley, setting proper envelop smooth length, controlling each period to have an energy valley point; S3, dismantling a basic heart sound period, that is dismantling a heart sound signal to an independent heart sound period signal according to the period energy valley point determined in the step S2; S4, selecting an eigen period, including performing pairwise cross-correlation operation on a plurality of basic heart sound period signals obtained in the S3, selecting to obtain the eigen period, an average correlation coefficient of the eigen period signal with other period signals is the highest. The method can accurately find the accurate eigen period, to provide the basis for later case analysis.