There is provided a sound device used while being worn on the listener's ears. The sound device includes a main body installed on a medial surface of an auricle, a holding portion having an annular hollow structure arranged to be coupled to an intertragic notch of an ear near an entrance of an ear canal, a sound guide portion formed as a pipe structure having one end communicating with the main body and another end communicating with the holding portion, an open/close operation unit configured to open or close an earhole, and a control unit configured to control driving of the open/close operation unit. The earhole open/close state is set for each user. The earhole open/close state can be switched depending on the type of application or content to be played, ambient noise level, user behavior, position information, or the like.

A sensor pod assembly comprising a gel pad, a gel pad cap, a piezoelectric sensor, a base plate, a base plate support, a wiring harness, a battery, a noise attenuating backing, and a charging component; said gel pad comprising a top and bottom, said bottom having a flat bottom and a concave recess; said flat bottom acoustically contacting said piezoelectric sensor; said piezoelectric sensor secured to a first side of said base plate support, and a second side of said base plate support secured to said base plate, a wiring harness and a battery connected to said base plate, and a charging component having exposed annular rings on the exterior side of said sensor pod assembly; a noise attenuating backing compressing the charging component against the base plate; and a gel pad cap having an outer face and an inner face, said inner face in contact with said base plate support.

A sensor pod assembly comprising a gel pad, a gel pad cap, a piezoelectric sensor, a base plate, a base plate support, a wiring harness, a battery, a noise attenuating backing, and a charging component; said gel pad comprising a top and bottom, said bottom having a flat bottom and a concave recess; said flat bottom acoustically contacting said piezoelectric sensor; said piezoelectric sensor secured to a first side of said base plate support, and a second side of said base plate support secured to said base plate, a wiring harness and a battery connected to said base plate, and a charging component having exposed annular rings on the exterior side of said sensor pod assembly; a noise attenuating backing compressing the charging component against the base plate; and a gel pad cap having an outer face and an inner face, said inner face in contact with said base plate support.

A device, including an implantable microphone, including a transducer, and a chamber in which a gas is located such that vibrations originating external to the microphone based on sound are effectively transmitted therethrough, wherein the transducer is in effective vibration communication with the gas, wherein the transducer is configured to convert the vibrations traveling via the gas to an electrical signal, the chamber and the transducer correspond to a microphone system, wherein the chamber corresponds to a front volume of the microphone system, and the transducer includes a back volume corresponding to the back volume of the microphone system, and the implantable microphone is configured to enable pressure adjustment of the front and/or back volume in real time.

A device, including an implantable microphone, including a transducer, and a chamber in which a gas is located such that vibrations originating external to the microphone based on sound are effectively transmitted therethrough, wherein the transducer is in effective vibration communication with the gas, wherein the transducer is configured to convert the vibrations traveling via the gas to an electrical signal, the chamber and the transducer correspond to a microphone system, wherein the chamber corresponds to a front volume of the microphone system, and the transducer includes a back volume corresponding to the back volume of the microphone system, and the implantable microphone is configured to enable pressure adjustment of the front and/or back volume in real time.

Infinite acoustic baffle (10) comprising a box (12) and a loudspeaker (20) comprising a membrane (22) that is movable relative to the box (12), the box (12) and the membrane (22) defining a substantially closed baffle chamber (14); the loudspeaker (20) comprising an electrically controlled motor (30) for actuating the membrane (22) that is able to move relative to the box (12), the baffle also comprising a mechanism (50) for axially urging the membrane (22) away from its median rest position counter to the pressure force exerted on the membrane (22) by the gas contained in the box (12) characterized in that the mechanism (50) comprises a cam (54) that is movable relative to the box (12) along an axis (X-X) for displacing of the cam under the displacement action of the membrane (22) and at least one cam follower (58A, 58B) that is biased transversely to the cam (54) by at least one spring (60A, 60B) and bears on the cam (54), the cam (54) having at least one cam surface (56A, 56B) capable of converting the transverse force of the or each spring (60A, 60B) into an axial force on the cam (54), the intensity of which varies depending on the position of the cam (54) relative to the box (12).

Infinite acoustic baffle (10) comprising a box (12) and a loudspeaker (20) comprising a membrane (22) that is movable relative to the box (12), the box (12) and the membrane (22) defining a substantially closed baffle chamber (14); the loudspeaker (20) comprising an electrically controlled motor (30) for actuating the membrane (22) that is able to move relative to the box (12), the baffle also comprising a mechanism (50) for axially urging the membrane (22) away from its median rest position counter to the pressure force exerted on the membrane (22) by the gas contained in the box (12) characterized in that the mechanism (50) comprises a cam (54) that is movable relative to the box (12) along an axis (X-X) for displacing of the cam under the displacement action of the membrane (22) and at least one cam follower (58A, 58B) that is biased transversely to the cam (54) by at least one spring (60A, 60B) and bears on the cam (54), the cam (54) having at least one cam surface (56A, 56B) capable of converting the transverse force of the or each spring (60A, 60B) into an axial force on the cam (54), the intensity of which varies depending on the position of the cam (54) relative to the box (12).

Infinite acoustic baffle (10) comprising a box (12) and a loudspeaker (20) comprising a membrane (22) that is movable relative to the box (12), the box (12) and the membrane (22) defining a substantially closed baffle chamber (14); the loudspeaker (20) comprising an electrically controlled motor (30) for actuating the membrane (22) that is able to move relative to the box (12), the baffle also comprising a mechanism (50) for axially urging the membrane (22) away from its median rest position counter to the pressure force exerted on the membrane (22) by the gas contained in the box (12) characterized in that the mechanism (50) comprises a cam (54) that is movable relative to the box (12) along an axis (X-X) for displacing of the cam under the displacement action of the membrane (22) and at least one cam follower (58A, 58B) that is biased transversely to the cam (54) by at least one spring (60A, 60B) and bears on the cam (54), the cam (54) having at least one cam surface (56A, 56B) capable of converting the transverse force of the or each spring (60A, 60B) into an axial force on the cam (54), the intensity of which varies depending on the position of the cam (54) relative to the box (12).

A microelectromechanical system includes an enclosure defining a cavity and an opening communicating with the cavity; a membrane mounted at the opening; a cantilever located within the cavity, the at least one cantilever comprising a first end, a second end and a fulcrum located between the first end and the second end; a plunger positioned between the membrane and the cantilever and configured to transfer displacement of the membrane to the first end of the cantilever; and a sensing member connected to the second end of the cantilever. The distance between the first end and the fulcrum is less than that between the second end and the fulcrum. The microelectromechanical system has the advantages of high SNR, small package size and high sensitivity. The membrane has a stiffness order of magnitude higher than a conventional membrane, which avoids mechanical collapse and large DC deformation under 1 atm.

A device, including an implantable microphone, including a transducer, and a chamber in which a gas is located such that vibrations originating external to the microphone based on sound are effectively transmitted therethrough, wherein the transducer is in effective vibration communication with the gas, wherein the transducer is configured to convert the vibrations traveling via the gas to an electrical signal, the chamber and the transducer correspond to a microphone system, wherein the chamber corresponds to a front volume of the microphone system, and the transducer includes a back volume corresponding to the back volume of the microphone system, and the implantable microphone is configured to enable pressure adjustment of the front and/or back volume in real time.