PROBLEM TO BE SOLVED: To mount a bone-and-bone-conduction sound sensor in the external auditory meatus to acquire bone-and-mesh conduction sound of a subject, and to stably and stably breathe blood vessels and breath of the subject for a long period of time without any special effort on the subject. (EN) Provided is a device which enables simultaneous measurement of sounds and makes it easy for a subject to hear surrounding sounds even during measurement. SOLUTION: A main body 1 provided with an outside air conducted sound microphone 6 and an insertion portion 2 that can be inserted into an external auditory meatus 8 of a subject and has a bone-flesh conducted sound sensor 4 and an outside air conducted speaker 7 provided near the tip. And a sound signal processing means 5 for processing the sound signal obtained by the bone-flesh conduction sensor, which is fixed to the ear of the subject. A biometric information acquisition apparatus including a low-pass bandpass filter 51 for extracting a high frequency bandpass filter 52 and a high-pass bandpass filter 52 for extracting a respiratory sound waveform. [Selection diagram] Figure 1【課題】外耳道内に骨肉導音センサを装着して被検者の骨肉導音を取得し、被検者に特別な労力をかけることなく長時間にわたって安定的に被検者の血管音と呼吸音を同時に測定できるようにすること、計測中においても被検者が周囲の音を聞き易くする装置を提供する。【解決手段】外気導音マイク６が設けられている本体部１及び被検者の外耳道８に挿入可能で先端付近に骨肉導音センサ４と外気導音スピーカ７が設けられている挿入部２を有し、被検者の耳に固定可能な筐体３並びに骨肉導音センサにより取得された音響信号を処理する音響信号処理手段５からなり、音響信号処理手段は、音響信号から血管音波形を抽出する低域バンドパスフィルタ５１及び呼吸音波形を抽出する高域バンドパスフィルタ５２を備える生体情報取得装置。【選択図】図１
