Patent ID: 6134336
Filing Date: 2000-10-17
Classification: H04M,H04R

Abstract:
A portable electronic device including an integrated speaker assembly, said integrated speaker assembly comprising:a first housing portion with first and second opposing surfaces, a portion of the first surface defining an ear placement region adapted to form at least a partially sealed air space with a user's ear;a speaker diaphragm, the speaker diaphragm attached to an inside surface of the housing between the first and second surfaces of the housing to define a first air space between the portion of the first surface and a front side of the speaker diaphragm and a second air space between a rear side of the speaker diaphragm and the second surface;at least one first opening between the portion of the first surface and the first air space, the at least first opening allows sound pressure waves from the front side of the speaker diaphragm to travel to the at least partially sealed air space;at least one second opening between the second air space and the second surface, the at least second opening allows sound pressure waves from the rear side of the speaker diaphragm to travel to free air; andat least one air passage between the portion of the first surface and the second surface, the at least one air passage acoustically coupling the at least partially sealed air space to open air beyond the second surface of the housing, so as to improve frequency response.