Patent ID: 8358799
Filing Date: 2013-01-22
Classification: H04R

Abstract:
1. An ambient noise isolation audio headphone comprising: one or more earpieces, each having an ear cup; and said ear cup having an outer wall, a sealed cavity, and a circumference; and a liner adjacent to said outer wall within said cavity and said liner having a first thickness and acting as a first layer ambient noise protection absorber; and a first absorber of a flexible polyurethane open cell foam having a second thickness and having approximately a contour size of said circumference and placed over said liner within said cavity; and a second absorber having a third thickness less than said second thickness and of a substantially smaller size than said circumference and centered and placed over said first absorber; and a felt bass absorber placed over said second absorber and having a fourth thickness and an elliptical strip form of approximately said ear cup circumference whereby a higher frequency audio energy may pass through said felt bass absorber with minimal attenuation and attenuate a bass resonance frequency audio; and an air gap between said first absorber and said felt bass absorber due to said second absorber having said smaller size than said circumference wherein an acoustic impedance difference between said first absorber, said second absorber, and said felt bass absorber is maximized and a substantial sound reflection is achieved; and a non-vented an-isotropic magnet driven speaker having a sound exiting portion and a speaker rearside having a speaker cap, said speaker rearside positioned to face said cavity; and said felt bass absorber positioned directly behind said speaker rearside and contacting said speaker cap; and an ear cuff having a backside, a cuff frame, a cuff pad, a cuff pad cover, an ear cavity, and a frontside; and said ear cuff backside mated with said ear cup wherein said sound exiting portion of said speaker may transmit through said ear cavity; and a speaker cover of a cloth material placed between said sound exiting portion and said ear cuff whereby said first absorber, said second absorber, said felt bass absorber, said speaker, and said liner are held together.