AUDIOMETRY EARPHONE INSERT

摘要

The present technology relates to an earphone apparatus adapted for use in audiometry examinations. The earphone apparatus comprises a housing and a receiver having an acoustic output adapted to connect with an audio signal source. The earphone apparatus can also include a circuit board with an electrical equalization network connected to the receiver. A coupling can be connected to the acoustic output of the receiver. A sound tube can be connected to the acoustic output and extends out from the housing to an ear piece. The earphone also includes a resonance cancellation assembly comprising a damping chamber and a tubing section acoustically connecting the damping chamber to the coupling. The damping chamber can provide an acoustic compliance to the sound delivered by the receiver. The earphone can also comprise an electrical connector with a protector that is adapted to connect with a female connector delivering electrical power.

主权项

1. An earphone apparatus comprising:
a housing; a receiver located within the housing, the receiver adapted to connect with an audio signal source, the receiver further comprising an acoustic output, a circuit board comprising an electrical equalization network, the electrical equalization network connected to the receiver; a coupling connected to the acoustic output of the receiver; a sound tube connected to the coupling, the sound tube extending out from the housing; and a resonance cancellation assembly, the resonance cancellation assembly comprising a damping chamber and a tubing section acoustically connecting the damping chamber to the coupling; wherein the damping chamber provides an acoustic compliance.