High-fidelity earpiece with adjustable frequency response

Abstract

An earpiece (100) is provided that includes an earpiece enclosure (121), a sound delivery member (113) that contains a sound delivery tube (111), and one or more drivers (101). The earpiece enclosure (121) includes one or more enclosure ports (131) that couple the internal enclosure volume to the volume outside of the earpiece. Corresponding to each enclosure port (131) is a port cover (133) that has at least a fully open port position and a fully closed port position. Preferably the port covering means is capable of multiple positions between the fully open port position and the fully closed port position. The port cover can be a plug (133), a rotating earpiece collar (601), a sliding cover, or other means. In at least one embodiment, separate drivers (305/307) and/or separate volumes within the earpiece enclosure (301) are coupled to separate enclosure ports (309/313).