Playback devices such as headphone devices can include an earpiece configured to be positioned adjacent a user's ear. The earpiece can include a transducer having a diaphragm configured to face toward the user's ear when the earpiece is positioned adjacent the user's ear, as well as an outlet vent in fluid communication with the transducer and a microphone. A support member within the earpiece includes a first opening aligned with the microphone and a second opening aligned with the outlet vent. An acoustic mesh extends over the first opening and the second opening, wherein the mesh has a substantially uniform acoustic impedance.

A dust-proof assembly includes a dust-proof net and a sealing net. The sealing net includes a support portion and a flexible sealing body, and the support portion is provided with a plurality of through holes. The dust-proof net and the support portion are arranged opposite each other, and the dust-proof net is connected to the support portion. The flexible sealing body is connected to the support portion and at least partially protrudes out of the dust-proof net.

A remote microphone device for a hearing aid system comprises a multitude of microphones providing a corresponding multitude of electric input signals; a digital signal processor for providing a processed signal in dependence of said multitude of electric input signals. The processor comprises a noise reduction system comprising at least one beamformer for providing a spatially filtered signal. The remote microphone device further comprises a wireless communication interface comprising antenna and transceiver circuitry allowing the remote microphone device to transmit said processed signal comprising said spatially filtered signal or a further processed version thereof to said hearing aid system; a rechargeable battery; a casing having a planar structure with a form and size as a standard credit card; and a user interface configured to allow the user to control functionality of the remote microphone device. The invention may e.g. be used in hearing aid systems or headsets.

A microphone assembly can include a microphone capsule having a diaphragm and a diaphragm cover, a grill for protecting the microphone capsule, and a filter material placed between the grill and the diaphragm cover. The microphone assembly can include a first air gap between the grill and the filter material to create a first interface, a second air gap between the filter material and the diaphragm cover to create a second interface, and a third air gap between the diaphragm cover and a diaphragm to create a third interface. The first interface, the second interface, and the third interface are each configured to create turbulence to assist in draining off energy from plosives and wind and reduce intensity of disturbances at the diaphragm. The filter material may include a mesh and can be supported by a frame, and the frame may be configured to fit underneath the grill.

The various implementations described herein include a video camera assembly that includes: (1) a housing; (2) an image sensor positioned within the housing and having a field of view corresponding to a scene in the smart home environment; and (3) a concave-shaped front face positioned in front of the image sensor such that light from the scene passes through the front face prior to entering the image sensor; where the front face includes: (a) an inner section corresponding to the image sensor; and (b) an outer section between the housing and the inner section, the outer section having a concave shape that extends from an outer periphery of the outer section to an inner periphery of the outer section; and where the concave shape extends around an entirety of the outer periphery.

According to an embodiment of the present invention, an electronic device may comprise: a housing; a printed circuit board disposed inside the housing, the printed circuit board comprising a first surface, a second surface facing away from the first surface, and a first through-hole and a second through-hole penetrating the first surface and the second surface; a first microphone disposed on the second surface so as to at least partially overlap the first through-hole when seen from above the first surface; a second microphone disposed on the second surface so as to at least partially overlap the second through-hole when seen from above the first surface; a support member disposed on the first surface, the support member comprising a third surface facing the first surface, a fourth surface facing away from the third surface, a third through-hole at least partially overlapping the first through-hole when seen from above the first surface, and a fourth through-hole at least partially overlapping the second through-hole when seen from above the first surface; a first sound-transmitting member disposed on the fourth surface so as to at least partially overlap the third through-hole; and a second sound-transmitting member disposed on the fourth surface so as to at least partially overlap the fourth through-hole. Various other embodiments may be included.

A microphone assembly includes a housing defining an acoustic cavity having a sound inlet for transmitting a sound in to the acoustic cavity. A micro-electro-mechanical (MEMS) microphone is located at least partially within the housing adjacent the acoustic cavity. The MEMS microphone includes a microphone aperture acoustically coupled with the aperture of the housing. An acoustic vent is located adjacent the microphone aperture to substantially allow sound to pass through the acoustic vent while substantially preventing a foreign contaminant from entering the microphone aperture.

At least a system or a method is provided for remote delivery or collection of a device such as an audio collection device. For example, a device comprising an aperture collection and retrieval pin is provided. An apparatus is provided having an aperture receiver, an aperture drive gear and a drive motor. The drive motor is configured to drive the aperture drive gear to open or close the aperture receiver of the apparatus for retrieving or releasing the device comprising the aperture collection pin.

A microphone unit including a tubular case having an opened top and an opened bottom, a waterproof film made of metal that has a thickness of 0.01 mm or more and 0.05 mm or less, a hardness of 100 HV or more, a proof stress of 70 N/mm.sup.2 or more, and a tensile strength of 350 N/mm.sup.2 or more, the waterproof film being fixed to the bottom of the case so as to block an opening part of the bottom of the case, a substrate arranged in the case, a microphone mounted on the substrate, and a sealing member that seals an opening part of the top of the case.

A MEMS device comprises a housing with an interior volume, wherein the housing includes an access port to the interior volume; a MEMS sound transducer in the housing, and a mechanical barrier structure having a plate element that is fixed by elastic spacers to a carrier and overlaps the access port, and providing a ventilation path passing a boundary region of the plate element, wherein a clearance of the ventilation path is set by the distance of the boundary region of the plate element to the housing or by the distance of the boundary region of the plate element to a blocking structure that opposes the boundary region of the plate element.