Patent ID: 8934637
Filing Date: 2015-01-13
Classification: A61B,H04R

Abstract:
1. An apparatus comprising: a chamber having an interior and an exterior, the chamber including one or more ventilation air paths configured to provide first air communication between the interior and the exterior of the chamber, the one or more ventilation air paths being further configured to restrict air flow through the one or more ventilation air paths; a non-contact acousto-electrical transducer disposed in the interior of the chamber, the transducer being configured to generate an electrical signal representing acoustical vibrations; a sound influencing bell formed as part of the chamber and defining a cavity; a diaphragm coupled to an outer end of the bell, the cavity of the bell being configured to provide second air communication between the transducer and the diaphragm, and the second air communication acoustically coupling the diaphragm to the transducer.