In-Ear Earphone

Abstract

An in-ear earphone includes a body configured to be placed at the entrance to or to be inserted at least in part into the auditory canal of a user's ear, the body housing an electro-acoustic driver and defining a passageway structure extending from the electro-acoustic driver to an opening in an outer surface of the body for allowing sound generated by the electro-acoustic driver to pass into the auditory canal of the user's ear. The passageway structure includes a flow divider section positioned to receive forward-radiated sound from the electro-acoustic driver, an output passageway extending from the flow divider section to the opening in the body, and an unvented enclosure in fluid communication with the flow divider section and operative to provide an acoustic impedance in parallel to the output passageway.

Dependencies are inferred from the claim text.