Patent ID: 7505602
Filing Date: 2009-03-17
Classification: H04M,H04R

Abstract:
1. A mobile radiotelephone device for porting an acoustical signal, the mobile radiotelephone device comprising: a housing having an interior surface and at least one opening for acoustically communicating with the interior of the housing; a transducer mounted within the housing of the mobile radiotelephone device for converting an electrical signal into an acoustical signal, the transducer having a first surface that emits a first acoustical signal; and a cavity forming member within the housing and engaging at least a portion of the interior surface of the housing and the transducer, including the first surface, to form an interior cavity defined by the cavity forming member, the interior surface of the housing, and the transducer, the cavity forming member defining a passage for acoustically coupling the interior cavity with the interior of the housing, wherein the first surface of the transducer emits the first acoustical signal into the interior cavity, the first acoustical signal travels out of the interior cavity through the passage and into the interior of the housing, and the only opening out of the interior cavity is the passage.