Patent ID: 8882683

Claim:
A physiological sound examination device which supports estimation of a state of a living body by measuring a physiological sound which propagates through the living body and calculating a plurality of physiological sound characteristics, the physiological sound examination device comprising: a hardware processor, wherein the hardware processor is configured to: calculate a power ratio which is a ratio of power of a first physiological sound signal to power of a second physiological sound signal, the first physiological sound signal being generated from a first physiological sound in a first portion of the living body and the second physiological sound signal being generated from a second physiological sound in a second portion of the living body; calculate, as one of the physiological sound characteristics, a transfer characteristic index of the physiological sound in the living body by performing a computation on the power ratio so that an influence of at least one of a respiratory flow velocity of the living body and a size of the living body is reduced; calculate first power which is power of the second physiological sound in a first frequency band: and calculate, as another one of the physiological sound characteristics, a sound source characteristic index of the physiological sound by performing a computation on the first power so that an influence of at least one of the respiratory flow velocity of the living body and the size of the living body is reduced.