Patent ID: 9154869
Filing Date: 2015-10-06
Classification: H04M,H04R

Abstract:
1. A portable audio electronic device comprising: an enclosure having a top wall, a bottom wall, a sidewall connecting the top wall to the bottom wall, an acoustic output opening and a back volume chamber, wherein the back volume chamber is defined in part by portions of the top wall, the bottom wall and the sidewall and the acoustic output opening is formed in the sidewall; a speaker driver positioned within the enclosure and resting against the bottom wall, the speaker driver comprising a sound radiating surface having a top face and a bottom face for emitting sound waves therefrom, wherein the top face faces the top wall; and a frame member attached to the speaker driver, the frame member having a) frame sidewalls that are positioned around the sound radiating surface and extend from the speaker driver to the top wall to form a first chamber over the sound radiating surface and b) chamber walls extending from an opening in one of the frame sidewalls to the acoustic output opening to form a second chamber, the first chamber and the second chamber forming a front volume chamber acoustically coupling the top face of the sound radiating surface to the acoustic output opening, and wherein the back volume chamber is acoustically coupled to the bottom face of the sound radiating surface, and wherein a portion of the back volume chamber is formed by a space surrounding the frame sidewalls and chamber walls of the front volume chamber and a volume of the back volume chamber is greater than a volume of the front volume chamber.