Panasonic Corporation

Panasonic Holdings Corporation

Yukio Nagasaka

Maki Yamada

Noriaki Horii

Katsumi Murakami

Chizu Habukawa

Mitsuru Endo

A bioacoustic sound testing device includes a band power calculator that calculates a band power in a predetermined period for each of a plurality of predetermined frequency bands on the basis of a bioacoustic sound, a reference power calculator that calculates a respiratory airflow reflecting power on the basis of a band power of a band reflecting a respiratory airflow, calculates a specific change reflecting power on the basis of a band power of a band reflecting a specific change in a living body, and calculates a reference power on the basis of the respiratory airflow reflecting power and the specific change reflecting power, and an index value calculator that calculates at least one index value on the basis of the reference power and the band powers of the plurality of predetermined frequency bands.

Bioacoustic sound testing device and bioacoustic sound testing method

A physiological sound examination device which supports estimation of a state of a living body includes a first physiological sound measurement unit; a second physiological sound measurement unit; a power ratio calculation unit which calculates a power ratio which is a ratio of first physiological sound signal power to second physiological sound signal power; and an illness-related gain calculation unit which calculates a transfer-characteristic of the physiological sound in the living body by computing the power ratio. A power calculation unit which calculates first power which is the second physiological sound signal power in a first frequency band; and an illness-related high frequency power ratio calculation unit which calculates a sound-source-characteristic of the physiological sound by computing the first power. The computing is performed to reduce an influence of the respiratory flow velocity and/or the size of the living body.

Physiological sound examination device and physiological sound examination method

Growing community of inventors

Osaka, Japan

Yukio Nagasaka