Wireless Earplug with Improved Sensitivity and Form Factor

摘要

An improved wireless communications earplug for use with a magnetic field transmitter. The wireless earplug has a receiver made of a coil of wire on a magnetic bobbin, mounted in close proximity or in contact with a magnetic case of a speaker. The magnetic case of the speaker serves to increase the magnetic flux through the receiver and improves the efficiency of the earplug. The speaker is acoustically coupled to an eartip, and the earplug may be molded into a custom earplug body.

主权项

1. A wireless communications earplug for use with a magnetic field transmitter, comprising:
a) a receiver comprising a coil of wire wound upon a bobbin of magnetic material; and b) a speaker having a case at least partially made of magnetic material, an acoustic output and an electrical input coupled to the wire of the receiver; wherein the bobbin of the receiver is mounted in close proximity to the case of the speaker to increase magnetic flux through the receiver.