The microphone comprises a housing (1, 2), which has an inner volume (12) filled with a gas, an opening (10) of the housing, an acoustic sensor (3) arranged in the housing, a diaphragm (13) of the acoustic sensor located above the opening, and a heater (14) in the inner volume. The acoustic sensor may especially comprise a microelectromechanical system. The gas is heated from inside the inner volume to increase the pressure and generate a corresponding signal of the acoustic sensor (3). This signal can be used for self-calibration of the sensitivity or for self-diagnostics to check the function of the microphone.

The microphone comprises a housing (1, 2), which has an inner volume (12) filled with a gas, an opening (10) of the housing, an acoustic sensor (3) arranged in the housing, a diaphragm (13) of the acoustic sensor located above the opening, and a heater (14) in the inner volume. The acoustic sensor may especially comprise a microelectromechanical system. The gas is heated from inside the inner volume to increase the pressure and generate a corresponding signal of the acoustic sensor (3). This signal can be used for self-calibration of the sensitivity or for self-diagnostics to check the function of the microphone.

An electronic device includes a body and a sound cavity assembly. The sound cavity assembly is coupled to the body and forms a sound cavity cooperatively with the body. The sound cavity includes a speaker and a cover. The cover is coupled to the body and at least partially protruding from the body to adjust a volume of the sound cavity.

Disclosed is an electronic device including a housing; a speaker configured to output a sound signal; an enclosure surrounding the speaker and including a pipe passage, through which the sound signal moves in a direction facing an opening formed in the housing; a heat emitting structure mounted on an inner surface or an outer surface of the enclosure; a sealing member attached to the pipe passage; and a processor physically or electrically connected to the heat emitting structure and configured to control emission of heat.

Disclosed is an electronic device including a housing; a speaker configured to output a sound signal; an enclosure surrounding the speaker and including a pipe passage, through which the sound signal moves in a direction facing an opening formed in the housing; a heat emitting structure mounted on an inner surface or an outer surface of the enclosure; a sealing member attached to the pipe passage; and a processor physically or electrically connected to the heat emitting structure and configured to control emission of heat.

Techniques associated with structures for dynamically tuned audio in a media device are described, including receiving data associated with an acoustic output, determining a target frequency response associated with an audio device, the audio device implemented with a hybrid radiator formed using a smart fluid or artificial muscle material, determining a value associated with a property of the smart fluid or artificial muscle material, calculating, using a dynamic tuning application, a magnitude of an external stimulus associated with the value, and sending a control signal to a source, the control signal configured to cause the source to apply the external stimulus, an application of the external stimulus of the determined magnitude configured to change the property of the smart fluid or artificial muscle material.

Techniques associated with structures for dynamically tuned audio in a media device are described, including receiving data associated with an acoustic output, determining a target frequency response associated with an audio device, the audio device implemented with a hybrid radiator formed using a smart fluid or artificial muscle material, determining a value associated with a property of the smart fluid or artificial muscle material, calculating, using a dynamic tuning application, a magnitude of an external stimulus associated with the value, and sending a control signal to a source, the control signal configured to cause the source to apply the external stimulus, an application of the external stimulus of the determined magnitude configured to change the property of the smart fluid or artificial muscle material.

A transducer assembly including a transducer enclosure having an enclosure wall separating a surrounding ambient environment from an encased space, and a transducer module positioned within the encased space. The transducer module has a module wall that divides the encased space into an exterior chamber and an interior chamber and defines a fluid port between the exterior chamber and the interior chamber, the exterior chamber is between the module wall and the enclosure wall, the interior chamber is between the module wall and a sound radiating surface positioned within the transducer module, and the interior chamber is acoustically coupled to an acoustic port to the surrounding ambient environment. The enclosure wall is movable relative to the module wall and movement of the enclosure wall causes ejection of a fluid out of the interior chamber to the ambient environment.

An external ear canal pressure regulation device including a fluid flow generator and an earpiece having a first axial earpiece conduit fluidicly coupled to the fluid flow generator, whereby the earpiece has a compliant earpiece external surface configured to sealably engage an external ear canal as a barrier between an external ear canal pressure and an ambient pressure.

An external ear canal pressure regulation device including a fluid flow generator and an earpiece having a first axial earpiece conduit fluidicly coupled to the fluid flow generator, whereby the earpiece has a compliant earpiece external surface configured to sealably engage an external ear canal as a barrier between an external ear canal pressure and an ambient pressure.