Stethoscope with improved resonant cavity amplification

摘要

One or more resonant cavities are selectively connected to the main sound passage of a stethoscope in order to selectively amplify frequency ranges of interest. The amplified frequency range is controlled by positioning a vent in a side wall of the resonant cavity a particular distance from the pick-up head. An improved sound pick-up head probe structure is rugged and allows extending the length of the probe when desired.