Patent Document ID: 9642544
Application ID: 15071915
Patent Flag: 1

Claim One:
1. A computer-implemented method, comprising: receiving, by at least one computer processor executing specific programmable instructions configured for the method, a plurality of Phonocardiogram (PCG) signals data inputs from a plurality of acoustic sensors; digital signal filtering, by the at least one computer processor, utilizing a plurality of bandpass filters, the plurality of PCG signals data inputs to form a plurality of filtered PCG outputs, wherein the plurality of bandpass filters comprises a L number of bandpass filters, wherein each bandpass filter outputs a K number of filtered PCG outputs; wavelet denoising, by the at least one computer processor, a first subset of filtered PCG outputs of the plurality of filtered PCG outputs to form a M number of denoised filtered PCG outputs, wherein M is equal to L multiply by K, wherein the wavelet denoising comprises: deconstructing, by the at least one computer processor, each filtered PCG output to generate a plurality of transform coefficients, by irrelatively passing each filtered PCG output through a succession of low and high pass filters, identifying, by the at least one computer processor, a subset of heartbeat-carrying transform coefficients from the plurality of transform coefficients, and reconstructing, by the at least one computer processor, the subset of heartbeat-carrying transform coefficients to form the M number of denoised filtered PCG outputs; transforming, by the at least one computer processor, utilizing an Independent-Component-Analysis (ICA), a second subset of filtered PCG outputs of the plurality of filtered PCG outputs to form the M number of filtered ICA transforms; transforming, by the at least one computer processor, utilizing the Independent-Component-Analysis (ICA), a first portion of the second subset of denoised filtered PCG outputs to form the M number of denoised filtered ICA transforms; compiling, by the at least one computer processor, a S number of a plurality of detection heartbeat (DH) inputs, comprising: i) the M number of filtered PCG outputs, ii) the M number of the denoised filtered PCG outputs, iii) the M number of the filtered ICA transforms, and iv) the M number of the denoised filtered ICA transforms; detecting, by the at least one computer processor, beat locations of beats in each of DH inputs; calculating, by the at least one computer processor, a confidence score that describes a probability that the beats in each DH input of the plurality of DH inputs represent actual heartbeats and not a noise; dividing, by the at least one computer processor, the plurality of DH inputs into at least two groups: i) a first group of DH inputs containing fetal heartbeats, ii) a second group of DH inputs containing maternal heartbeats; selecting, by the at least one computer processor, from the first group of DH inputs, at least one particular fetal DH input that contains the fetal heartbeat based on a first confidence score of the at least one particular fetal DH input; and selecting, by the at least one computer processor, from the second group of DH inputs, at least one particular maternal DH input that contains the maternal heartbeat, based on a second confidence score of the at least one particular maternal DH input.