PROBLEM TO BE SOLVED: To provide a physical information measurement apparatus and a physical information measurement program, suppressing influence of a body motion and detecting a biosignal weaker than a body motion signal, even if there is the body motion in time of the detection.SOLUTION: This physical information measurement apparatus 1 detects prescribed physical information from an input signal which includes the detection target biosignal having periodicity and where a plurality of biosignals having different strength are mixed. The physical information measurement apparatus 1 includes: an amplitude compression part 12 performing compression processing of only an amplitude of each wave of the input signal having the strength exceeding a threshold value determined according to the detection target biosignal, and bringing the amplitude of the wave having the strength within the threshold value into a state as it is and a signal analysis part 13 analyzing an output signal from the amplitude compression part 12, and outputting the prescribed physical information.COPYRIGHT: (C)2012,JPO&INPIT【課題】検出の際に体動があっても、体動の影響を抑えて体動信号よりも弱い生体信号の検出を行うことができる身体情報測定装置及び身体情報測定プログラムを提供すること。【解決手段】身体情報測定装置1は、周期性を有する検出対象生体信号を含んで強度の異なる複数の生体信号が混在する入力信号から所定の身体情報を検出する身体情報測定装置であって、検出対象生体信号に応じて決められた閾値を超える強度の入力信号の個々の波の振幅のみを圧縮処理する一方、閾値内の強度の波の振幅はそのままの状態とする振幅圧縮部12と、振幅圧縮部12からの出力信号を解析して所定の身体情報を出力する信号解析部13と、を備えている。【選択図】図1