Patent ID: 8098854
Filing Date: 2012-01-17
Classification: H04R

Abstract:
1. A speaker module for use in a personal communication device, the module comprising: a first transducer adapted to receive a first electrical signal and output a corresponding sound, the first transducer comprising a first housing, a movable diaphragm positioned inside the first housing and which divides an inner space of the first housing into a first chamber and a second chamber, a sound output port connecting one or both of the first chamber and the second chamber to the surroundings, and a sound input connected to the first or the second chamber; and a second transducer adapted to receive a second electrical signal and output a corresponding sound, the second transducer comprising a second housing, a movable diaphragm positioned within the second housing and which divides an inner space of the second housing into a third chamber and a fourth chamber, and a sound output connected to one or both of the third chamber and the fourth chamber, the second sound output being acoustically connected to the sound input of the first transducer.