Patent ID: 8031900
Filing Date: 2011-10-04
Classification: H04R

Abstract:
1. An eartip fabricated from a first material and configured for coupling to an earphone, said eartip comprising: a central opening within said eartip, said central opening configured to accept an earphone sound delivery member; means for attaching said eartip to said earphone sound delivery member; at least one port within said eartip, said at least one port forming at least one acoustic leakage pathway independent and separate from said earphone sound delivery member, wherein said at least one port is adjacent to said central opening, and wherein said acoustic leakage pathway couples ambient sound to an exit surface of said eartip; and acoustic material filling at least a portion of said at least one port, said acoustic material different from the first material used to fabricate the eartip, wherein said acoustic material is selected from the group of materials consisting of foam and fibrous material, and wherein said acoustic material is selected on the basis of its acoustic impedance.