Devices and methods related to endocardial acceleration signal processing are provided. One device is configured to: (1) divide an endocardial acceleration (EA) signal into a plurality of EA sub-signals (2) identify, in each of the plurality of EA sub-signals, at least one signal component associated with a type of heart sound (3) extract a characteristic of the at least one signal component for two or more of the plurality of cycles (4) calculate a correlation coefficient correlating the at least signal component for a first cycle of the plurality of cycles to the at least one signal component of a second cycle of the plurality of cycles and (5) perform temporal retiming of one or more of the signal components based on the correlation coefficient to generate one or more adjusted signal components of the associated one or more EA sub-signals.
