A passive stethoscope chest piece has a chest piece housing containing a passive piezoelectric (piezo) element mounted within a metal housing. The piezo element converts body signals to an electrical representation. A pair of electrical connections attached to the metal plate and the piezoelectric layer of the piezo element pass the electrical representation outside the housing for processing by external circuitry. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.
