< Topic >With simpler equipment configuration, the installation to the various living bodies is possible, the living body monitoring equipment whose observation and continual record of the data of the frequency area of desire are possible is offered.SolutionsThe sound which is generated inside the living body is converted to voltage, listening sensor the sound signaling which is amplified with amplifier device 2 in order to make the sound signaling from 1 in order to make the sound signaling and the listening sensor amplify and the amplifier device observation device 3 in order to output with sound or the image possesses, the sound signaling which is amplified in the treatment circuit 21 in order to amplify the sound signaling which is converted to voltage in the power circuit 20 where listening sensor 1, has the piezo component of film condition, amplifier device 2, supplies electricity to each circuit and listening sensor 1 and the treatment circuit,It amplifies in the control circuit 22 in order, to make the sound signaling of the frequency area of specification in the filter circuit and the treatment circuit it is constituted from the output circuit 23 in order to output the sound signaling which is made the frequency area of specification in the control circuit to the observation device.< Choice figure >Drawing 1【課題】より簡単な装置構成で、多様な生体への取り付けが可能であり、所望の周波数域のデータの観察や、連続的な記録が可能な生体モニター装置を提供する。【解決手段】生体内部で発生する音を電圧に変換し、音響信号とするための聴音センサ1と、聴音センサからの音響信号を増幅させるためのアンプ装置2と、アンプ装置で増幅した音響信号を音又は画像で出力するための観測装置3を有し、聴音センサ1が、フィルム状のピエゾ素子を有し、アンプ装置2が、各回路に電力を供給する電源回路20と、聴音センサ1で電圧に変換された音響信号を増幅するための処理回路21と、処理回路で増幅した音響信号を、フィルタ回路で特定の周波数域の音響信号とするための制御回路22と、処理回路で増幅し、制御回路で特定の周波数域とした音響信号を観測装置に出力するための出力回路23より構成される。【選択図】図1