A subject evaluation value measuring apparatus 10, functioning as a cuff
volumetric pulse wave obtaining apparatus, includes a pulse wave
determining device (i.e., a cuff volumetric pulse wave determining
device) 52 that determines, using an inverse transfer function 1H(f),
stored in a ROM (i.e., an inverse transfer function memory) 42, that
corresponds to a pre-determined transfer function H(f) between input,
i.e., pressure pulsation produced in a cuff 20, and output, i.e.,
pressure pulsation detected by a pressure sensor 24, a no-delay cuff
volumetric pulse wave P.sub.K(t) having substantially no delay of
transmission, based on an actual cuff pulse wave signal SM outputted by
the pressure sensor 24. The thus determined cuff volumetric pulse wave
P.sub.K(t) is free of waveform distortion and accordingly enjoys high
accuracy.