Device agnostic audio path sealing

An apparatus comprising:

• a first housing portion and a second housing portion, when mated, are arranged to enclose a personal communication device, and a surface of the second housing portion is arranged to impart pressure on the personal communication device toward the first housing portion;
• a first supporting portion disposed along one side of the first housing portion and arranged to support the personal communication device;
• a first liner disposed in the first housing portion and arranged to form a first cavity, wherein the first cavity is adjacent to the first supporting portion;
• a noise generator operable to provide noise signal stream;
• and
• a first audio output device coupled to the noise generator, at least partially supported by the first housing portion, operable to output first masking signals to the first cavity, wherein the first masking signals are generated based at least in part on the noise signal stream, the first liner includes at least one opening allowing passing of sound from the first audio output device to the first cavity, and the at least one opening is positioned proximate to an input device on the personal communication device.