PROBLEM TO BE SOLVED: To suppress the influence of noise contained in the output of a sensor for detecting a biomedical signal and to influence the phase shift by a method different from using a sensor arranged at a position where a biomedical signal cannot be detected. Is suppressed and the biological information is calculated. A biological information detection device, for each of a plurality of biological signals P1 and P2 respectively input from a plurality of biological activity sensors arranged at mutually different positions, a frequency indicating a relationship between the frequency and the intensity of the biological signal. The characteristics Q1 and Q2 are acquired, the plurality of frequency characteristics Q1 and Q2 are combined to obtain a combined frequency characteristic Q indicating the relationship between frequency and strength, and based on the combined frequency characteristic Q, information regarding biological activity is obtained. Calculate certain biometric information. [Selection diagram] Fig. 3【課題】生体信号を検出できない位置に配置されたセンサを利用するのとは別の方法で、生体信号を検出するセンサの出力に含まれるノイズの影響を抑制して、かつ、位相ずれの影響を抑制して、生体情報を算出する。【解決手段】生体情報検知装置は、互いに異なる位置に配置された複数の生体活動センサからそれぞれ入力された複数の生体信号Ｐ１、Ｐ２の各々について、当該生体信号の周波数と強度の関係を示す周波数特性Ｑ１、Ｑ２を取得し、それら複数の周波数特性Ｑ１、Ｑ２を合成して、周波数と強度の関係を示す合成周波数特性Ｑを得て、当該合成周波数特性Ｑに基づいて、生体活動に関する情報である生体情報を算出する。【選択図】図３
