PROBLEM TO BE SOLVED: To provide an electric stethoscope system which satisfactorily analyzes noise included in biological sound.SOLUTION: A biological sound analysis apparatus comprises: first acquisition means 110 which acquires biological sound information indicating a chronological change in biological sound； second acquisition means 120 which acquires reference information including an occurrence time and frequency characteristics in a predetermined period of noise which can be included in the biological sound； and output means 200 which outputs noise information indicating the noise included in the biological sound, on the basis of the biological sound information and the reference information.SELECTED DRAWING: Figure 1【課題】生体音に含まれる雑音を好適に解析する電気聴診器システムを提供する。【解決手段】生体音解析装置は、生体音の経時的な変化を示す生体音情報を取得する第１取得手段１１０と、生体音に含まれ得る雑音の所定期間内における発生時期及び周波数特性を含む参照情報を取得する第２取得手段１２０と、生体音情報及び参照情報に基づいて、生体音に含まれる雑音を示す雑音情報を出力する出力手段２００とを備える。【選択図】図１
