Patent ID: 8520866

Claim:
An apparatus for a portable communication device, comprising: a processor configured to enhance a portion of an electrical signal in a predetermined audio frequency range; at least one cavity; and at least one loudspeaker configured to receive the enhanced electrical signal and to radiate an acoustic signal from the portable communication device via at least one sound hole made in a wall of the at least one cavity, wherein the radiated acoustic signal includes a portion based on the electrical signal enhanced in the predetermined audio frequency range, wherein the at least one cavity is acoustically coupled to the at least one loudspeaker, wherein at least one surface of the at least one cavity is configured to vibrate the portable communication device when the acoustic signal enters the at least one cavity, wherein the vibration is transmitted to the portable communication device at the same time the acoustic signal is radiated from the at least one sound hole directly to a region exterior to the portable communication device, wherein the at least one cavity is acoustically coupled to the region exterior to the portable communication device via the at least one sound hole.