Patent ID: 8649854

Claim:
A method for a determination of frequency band characteristic of a heart disease comprising the steps of: using an electronic stethoscope, collecting and/or recording a first set of phonocardiograms from a first set of reference healthy patients, and a second set of phonocardiograms from a second set of patients suffering of said heart disease; defining a frequency sampling rate and a maximum cutoff frequency, producing a finite set of sampled frequencies; calculating spectral energies at all sampled frequencies, said spectral energies being calculated on the entire phonocardiogram; calculating spectral energies of all possible frequency bands by summing spectral energies at sample frequencies belonging to said frequency bands; comparing said spectral energies of all possible frequency bands; and determining a frequency band giving rise to a maximal distinction between spectral energies of the said phonocardiograms from the first and the second set of phonocardiograms.