PROBLEM TO BE SOLVED: To appropriately analyze noise included in biological sound.SOLUTION: A biological sound analyzer comprises: first acquisition means (110) for acquiring biological sound information indicating chronological change of biological sound； second acquisition means (120) for acquiring characteristic information indicating characteristics of external noise which may be included in the biological sound information； and output means (200) for outputting noise information which indicates noise included in the biological sound based on the biological sound information and characteristic information. With this configuration, correct noise information can be output even when external noise is included in the acquired biological sound.SELECTED DRAWING: Figure 1【課題】生体音に含まれる雑音を好適に解析する。【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、生体音情報に含まれ得る外部騒音の特性を示す特性情報を取得する第２取得手段（１２０）と、生体音情報及び特性情報に基づいて、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。このようにすれば、取得した生体音に外部騒音が含まれる場合であっても、正確な雑音情報を出力することが可能である。【選択図】図１
