Patent ID: 8213645

Claim:
A bone conduction assembly comprising: a microphone comprising an acoustic-to-electric transducer; an assembly stem for housing said microphone and shaped for insertion into an ear canal of a user; an ear cushion having an inner surface surrounding an outer surface of said assembly stem and an outer, contiguous, annular surface configured to maintain contact with an ear canal of a user when worn; and a microphone channel shaped to channel vibrations resulting from bone conduction from the ear canal through the assembly stem to the microphone, wherein the microphone channel comprises a sealed, 360-degree air channel between the ear cushion and the assembly stem housing, wherein the microphone channel further comprises a second air channel extending between an acoustic sensor of the microphone and the 360-degree air channel of the ear cushion, whereby said assembly is constructed so that vibrations are conveyed through the material of the ear cushion, to the 360-degree air channel, to the air channel, to the acoustic sensor, where the microphone converts the vibrations to electric signals.