Patent ID: 7623641

Claim:
A voice communication unit for communicating through a sound barrier, comprising: an outer audio unit comprising an outer voice sensing device and an outer voice reproducing device, wherein the outer audio unit further comprise an input sound path through which the sound from the outside of the outer audio unit is guided to the outer voice sensing device, and an output sound path through which sound is guided from the outer voice reproducing device to the outside of the outer audio unit, wherein the input sound path is isolated from the output sound path, wherein the input sound path is separated from, the output sound path by at least about two (2) inches, wherein the outer audio unit further comprises a first case enclosing the outer voice reproducing device and a second case enclosing the voice sensing device, wherein the first case comprises a cylindrical wall, wherein the output sound path comprises one or more slotted openings provided on the cylindrical wall, wherein the input sound path protrudes beyond the first case, where in the input sound path comprises an opening provided on the second case, wherein the opening is positioned around the center of the first case, and wherein the second case has a substantially cylindrical shape, and the opening is provided on the periphery of the second case; an inner audio unit comprising an inner voice sensing device and an inner voice reproducing device; and a signal processing unit which connects the outer audio unit and the inner audio unit, wherein the signal processing unit comprises an extraneous-sound reducing unit.