Patent ID: 8180091

Claim:
A headphone which includes a frame that forms a frame passage, a cushion mounted on an inner end of said frame for pressing against a location on a person that lies around the person's ear canal, said frame has an outer wall that blocks sound, and said headphone has a speaker that lies in said frame and that has a speaker diaphragm side comprising a diaphragm that vibrates inward and outward to generate sound and an opposite speaker hole side that forms a second wall with a plurality of holes, wherein: said speaker is mounted with said speaker second wall that has holes facing inwardly toward the person's ear canal and with said holes opening to said frame passage, and with said speaker diaphragm side that comprises a diaphragm, facing outwardly away from the person's ear canal; the frame further comprising a rigid tube that forms the frame passage extending from the cushion to the speaker, wherein the rigid tube is located on a central axis of the frame; wherein the rigid tube has a constant diameter for most of its length, but has a speaker end tapered in diameter to have progressively smaller diameters at progressively more inward locations therealong; and wherein the holes in the speaker second wall lie within a hole circle and the tapered speaker end of the tube has an outward end diameter at least as great as the hole circle.