Abstract: A piezoelectric device includes a connecting section connecting a pair of beam sections adjacent to each other. The connecting section is connected to one of the pair of beam sections at a first end portion. The connecting section is connected to another of the pair of beam sections at a second end portion. The second end portion faces the first end portion in a direction in which the pair of beam sections are aligned. A second coupling portion is located along a first coupling portion. The connecting section includes only one first end portion. The connecting section includes only one second end portion. Each of the first end portion and the second end portion is closer to a tip end portion than to a fixed end portion of each of the pair of beam sections.

Abstract: A hearing system performs nonlinear processing of signals received from a plurality of microphones using a neural network to enhance a target signal in a noisy environment. In various embodiments, the neural network can be trained to improve a signal-to-noise ratio without causing substantial distortion of the target signal. An example of the target sound includes speech, and the neural network is used to improve speech intelligibility.

Abstract: Apparatuses, systems and methods for wearable devices such as eyewear are described. According to one embodiment, the wearable device includes a body, electronics, and a connector. The body is configured to hold one or more optical elements, the body being disposable between a collapsed condition and a wearable condition in which the device is wearable by a user to hold the one or more optical elements within user view. The electronics are carried by the body. The connector is configured to enable establishment of an electrical and/or electronic connection with the electronics via the connector, the connector being housed by the body such that the connector is substantially obscured from view when the body is in the wearable condition, and such that the connector is exposed for connective access when the body is in the collapsed condition.

Abstract: A loudspeaker transducer diaphragm or cone (e.g., 201, 301 or 401) is configured with arcuate protrusions that project distally from the main forward or distal surface 230 to provide stiffening and a break-up of resonant vibration modes when the loudspeaker is in use. The protrusions (e.g., 210, 310 or 410) are convex on one surface 230 and concave on the opposite surface 234, so their average thickness is similar to the frustoconical areas of the cone, i.e. they are shell-like in nature rather than solid mounds or walls. The protrusions 210 are generally curved as they run radially from the inner opening 204 to the outer peripheral edge to encourage modal break-up (suppressing strong vibrational modes, e.g., as in region 155).

Abstract: Provided is an MEMS device, including: a base, a rear cavity; a vibrating diaphragm, the vibrating diaphragm including an upper diaphragm and a lower diaphragm, and an accommodation space being formed between the upper and lower diaphragms; a counter electrode arranged in the accommodation space; and supporting members concentrically arranged and spaced apart. The supporting members are arranged between the upper and lower diaphragms and are spaced apart from the counter electrode, two opposite ends of each supporting member are connected to the upper and lower diaphragms, and at least one of the supporting members is provided with first cavities. An upper ventilation hole and a lower ventilation hole are respectively formed at a position of the upper diaphragm and a position of the lower diaphragm corresponding to one of the first cavities; and the upper ventilation hole, the first cavity and the lower ventilation hole communicate with each other.

Abstract: A pressure wave generating element is provided that includes a support and a heat generating layer that is provided on the support and generates heat by energization. Moreover, the heat generating layer includes a fiber with at least a partial metal coating on a surface.

Abstract: An earbud includes: a speaker unit which generates a sound wave; a first housing which houses the speaker unit, and has a first opening which faces a sound wave generation surface of the speaker unit; a sound conduit having one end connected to the first opening; an ear plug which is attached to the other end of the sound conduit, the ear plug being inserted into the ear canal; and an air conduit which is disposed so as to penetrate the ear plug and the first housing, the air conduit being disposed independently from the sound conduit.

Abstract: An acoustic lens includes: a plurality of fins each having one end portion located on a side opposite to the loudspeaker on a support surface that extends as convexly curved along a predetermined direction when the acoustic lens is viewed from a lateral side, the plurality of fins being arranged in the predetermined direction at substantially equal intervals and substantially in parallel to one another. When the acoustic lens is viewed from the lateral side, the plurality of fins are substantially identical in length, and an elevation angle of the support surface relative to each of the plurality of fins gradually increases from one side to an other side in the predetermined direction.

Abstract: A wireless earphone includes a housing and a power system disposed in a cavity formed by the housing. The power system is configured to supply power to the wireless earphone. The wireless earphone further includes a first electrical connector and a second electrical connector disposed on the housing and are respectively electrically coupled to two electrodes of the power system, and the electrodes include a positive electrode or a negative electrode. At least one of the first electrical connector or the second electrical connector is electrically coupled to one of the electrodes using an anti-interference component. The anti-interference component is configured to suppress an interference signal introduced from the first electrical connector or the second electrical connector.

Abstract: Presented herein are devices/apparatuses having indicator lights (visual indicators), such as light emitting diodes (LEDs), positioned underneath/below the outer surface of a housing of the device. However, the indicator lights positioned below the outer surface of the housing, sometimes referred to herein as “sub-surface” or “sub-housing” indicator lights, are optically coupled to the outer surface of the housing via one or more optical connectors (e.g., light guides, light pipes, light diffusers, etc.). As such, the light emitted by the sub-surface indicator lights is still visible at the outer surface of the device housing.

Abstract: The present invention discloses a MEMS chip including a substrate with a back cavity; a capacitance system disposed on the substrate including a back plate, a membrane opposite to the back plate forming an inner cavity; a protruding portion accommodated in the inner cavity, fixed on one of the back plate and the membrane and spaced apart from the other along a vibration direction; a support system configured to support the capacitance system, including a first fixation portion suspending the membrane on the substrate, and a second fixation portion suspending the back plate on the substrate; the protruding portion comprises an annular first protruding portion and an annular second protruding portion surrounding the first protruding portion. The MEMS chip has higher sensitivity, higher resonance frequency and higher low frequency property.

Abstract: Provided is a MEMS condenser microphone, including a base plate, a spacer and a membrane. The membrane is supported above the base plate by the spacer. The base plate, the spacer, and the membrane enclose a vacuum cavity. An end of the membrane close to the vacuum cavity is connected, by means of a connecting rod, to an electrostatic clutch. The electrostatic clutch is connected to a capacitive sensing structure. The microphone has the advantage of allowing microphone performance over a wide range of atmospheric pressures which is likely expected by customers. This is achieved electrostatically in a purely passive way which has an advantage over other designs which require complex electronics and active control. Physically decoupling the membrane and sense structure simplifies the design of the sense structure as only small AC perturbations of the rotor need to be considered with no DC changes in rotor position.

Abstract: The present invention provides a coaxial speaker, which includes a frame, a vibration system and a magnetic circuit system. The magnetic circuit system includes a magnetic conduction assembly and a magnet assembly. The magnetic conduction assembly includes a first magnetic conduction plate, an inner side wall and an outer side wall, and a second magnetic conduction plate fixed on the side of the inner side wall. The magnet assembly includes a first magnet that forms a first magnetic gap and a second magnet that forms a second magnetic gap, a first vibration assembly and a second vibration assembly. The present invention is provided with high internal space integration, high magnetic circuit utilization, and meets the requirements of the full frequency domain.

Abstract: A hearing device cerumen filter device is disclosed comprising: a body having a first end and a second end, the body comprising an inner surface defining a cavity, and an outer surface having an outer cross-sectional diameter, where the outer surface comprises a first support member positioned at a first distance from the first end, where the first support member has a first cross-sectional diameter, and the outer surface comprising a second support member positioned at a second distance from the first end, where the second support member has a second cross-sectional diameter; a filter structure positioned within the cavity of the body; and a collar positioned at the second end of the body, the collar having a collar cross-sectional diameter.

Abstract: A multi-input-driving loudspeaker including a frame, a diaphragm arranged on the frame, and a plurality of input driving mechanisms. Each input driving mechanism includes a voice coil and a magnetic circuit assembly for driving the voice coil to vibrate. A plurality of magnetic circuit mounting holes are arranged on the frame. A plurality of voice coil mounting holes are arranged on the diaphragm. Each of the input driving mechanisms further includes a damper. Each of the voice coils is sleeved with one of the dampers. The frame has a plurality of flanges surrounding the magnetic circuit mounting holes. Each of the dampers and each of the flanges cooperate with each other so that each damper is embedded between an inner walls of the flange corresponding therewith.

Abstract: Systems and methods are herein described for a coaxial loudspeaker. The loudspeaker may comprise a compression driver having a first diaphragm assembly including a first magnet, and a first diaphragm coupled to a first voice coil, and a second diaphragm assembly including a second magnet and a second diaphragm coupled to a second voice coil. The compression driver may further comprise a third diaphragm assembly including a third diaphragm coupled to a third voice coil.

Abstract: A hearing protection device is provided. The hearing protection device includes a first earmuff connected to a second earmuff by a headband. Each of the first and second earmuffs are configured to dampen ambient sound. The hearing protection device also includes an antenna, located within a housing of the first earmuff. The antenna comprises a rigid portion coupled to a flexible portion. Both the rigid portion and the flexible portion are fixed within the housing. The flexible portion is configured to remain substantially in line with a ground plane with respect to the rigid portion.

Abstract: The invention relates to a headset for a helmet. The headset comprises a speaker unit, a boom microphone and a skull microphone. The headset further comprises a switch configured to activate the boom microphone or the skull microphone based on the position of the boom microphone. The invention relates also to a helmet comprising the headset.

Abstract: The present disclosure relates to a socket connector for a hearing device. The hearing device comprises a Behind-The-Ear (BTE) unit and a Receiver-In-the-Ear (RIE) unit, the BTE unit comprising a frame, wherein the frame comprises electronic components of the BTE unit, the RIE unit comprising a plug connector configured for providing an electrical connection between the RIE unit and the BTE unit. The socket connector is connectable to the frame of the BTE unit and is configured for detachably connecting the plug connector to the frame.

Abstract: The present invention relates to principles for cooling the stationary winding of an induction motor, said winding being positioned outside the movable armature. The cooling can be achieved by means of cooling fins, openings allowing the ventilation of the winding with or without a fan, a fluid circuit outside the bowl, a fluid circuit inside the bowl, a fluid circuit inside the winding, and/or the addition of heat pipes inside the bowl. This motor as presented can be used, without limitation, inside loudspeakers or vibrators.