Patent ID: 8332034

Claim:
A system, comprising: an input circuit, configured to receive heart sound information; a heart sound recognition circuit, coupled to the input circuit, 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; wherein the heart sound waveform includes multiple physiological cycles; wherein the particular heart sound includes at least a portion of one of S 1 S 2 , S 3 , and S 4 ; and wherein the first intra heart sound energy indication and the corresponding first intra heart sound time indication corresponds to the at least a portion of one of S 1 , S 2 , S 3 , and S 4 , respectively.