Patent ID: 11883228
Assignee: CAMBRIDGE ENTERPRISE LIMITED
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A method of processing acoustic heart signal data, the method comprising:
capturing time series acoustic heart signal data from a patient, the time series acoustic heart signal data representing the sound of the patient's heart;
classifying the time series acoustic heart signal data into a plurality of heart sound categories to provide time series sound category data, wherein the time series sound category data comprises, for each of a plurality of time intervals, category probability data representing a probability of the acoustic heart signal for the time interval falling into each of the heart sound categories;
fitting the time series sound category data to a heart state model having a sequence of heart states with associated heart sounds corresponding to the heart sound categories and adjustable durations of the states, to determine timings of the sequence of states;
determining, from the timings of the sequence of states and corresponding category probability data, a confidence value for the model fit; and
outputting one or both of a model fit indication dependent upon the confidence value, and data identifying timings of the sequence of states.