PROBLEM TO BE SOLVED: To provide a biological sound examination device and a biological sound examination method capable of acquiring an index value that appropriately reflects a state of a respiratory tract while reducing the number of sensors for measuring a biological sound.SOLUTION: A biological sound examination device includes: a band power calculation part 204 for calculating band power in a predetermined section about a plurality of predetermined frequency bands based on a biological sound a reference power calculation part for calculating reference power based on the band power of a band at least partially including any frequency in the range of 250 or higher and 1,050 Hz or lower and any frequency in the range of 1,250 or higher and 1,550 or lower Hz of the band power in the plurality of predetermined frequency bands and an index value calculation part 504 for calculating at least one index value based on the reference power and the band power in the plurality of predetermined frequency bands.COPYRIGHT: (C)2016,JPO&INPIT【課題】生体音を測定するセンサの数を減らしながらも、気道状態を適切に反映した指標値を得ることができる生体音検査装置及び生体音検査方法を提供する。【解決手段】生体音に基づき所定の複数の周波数帯域について所定の区間内の帯域パワーを算出する帯域パワー算出部204と、所定の複数の周波数帯域の帯域パワーのうち、250以上1050Hz以下の範囲のいずれかの周波数及び1250以上1550Hz以下の範囲のいずれかの周波数を少なくとも一部に含む帯域の帯域パワーに基づき基準パワーを算出する基準パワー算出部と、基準パワーと所定の複数の周波数帯域の帯域パワーとに基づき少なくとも1つの指標値を算出する指標値算出部504とを備えた。【選択図】図1
