Non-invasive detection of human body corporeal data by determining cross-correlation function between difference signal of acoustic signals and known comparison signal

摘要

The method involves non-invasive measurement of an acoustic corporeal signal from an organ of a person under examination. An ambient acoustic signal is measured for the environment of the person. The impulse response of the transmission system between the organ and the environment of the person from these two signals. A cross-correlation function between the difference signals and a known comparison signal for the organ is determined, and the corporeal data are determined from the cross-correlation signal. An Independent claim is included for an apparatus for performing the method.