Abstract: A sound detection system includes a plurality of microphones each configured to detect a sound inside a living body and output a sound signal generated based on the detected sound; and an information processing device that includes an acquisition unit configured to acquire the sound signal from each of the plurality of microphones, a control unit, and an output unit, the control unit specifies a first position that is a position of a prescribed living body site based on the sound signals acquired by the acquisition unit, estimates a second position that is in a prescribed relative positional relation with the first position, and controls directivities of the plurality of microphones to increase a sensitivity with respect to the second position, and the output unit outputs information generated based on the sound signals acquired by the acquisition unit in which the directivities of the plurality of microphones are controlled.

Abstract: A blood pressure measuring apparatus includes a cuff which is attached to and around an external ear; a first pulse wave detector and a second pulse wave detector which detect a pulse wave in a part squeezed by the cuff and which are affected differently from each other by a characteristic of body movements; a body movement detecting means which detects the characteristic of body movements; a pulse wave selecting means which selects a pulse wave detected by one of the first pulse wave detector and the second pulse wave detector based on the characteristic of body movements detected by the body movement detecting means; and a blood pressure value deriving means which derives a blood pressure value based on the pulse wave selected by the pulse wave selecting means.

Abstract: To provide a technique which makes it possible to obtain a proper pulse wave signal for high-accuracy blood pressure measurements, thereby saving the trouble of taking measurements repeatedly and reducing a physical burden imposed on the user by cuff pressure.

Abstract: This invention provides a blood pressure measuring apparatus capable of deriving an appropriate pressure value even in an environment in which the environmental temperature constantly changes.

Abstract: It is an object of the present invention to provide a cardiovascular information measurement system capable of performing an accurate blood pressure measurement and calculating an accurate cardiovascular index in consideration of the pulsation of a blood vessel wall.