Abstract: Disclosed herein is a speaker. The speaker includes a magnetic circuit device provided to generate a magnetic force, a voice coil configured to vibrate by the magnetic circuit device, and a damper configured to guide a movement of the voice coil, wherein the damper comprises a first portion, and a second portion having a different weave than the first portion.

Abstract: A sound generator comprises a shell, a vibration system and a magnetic circuit system sequentially accommodated and fixed at a first end of the shell from top to bottom; the magnetic circuit system is provided with a rear sound hole; the shell comprises a first portion corresponding to the vibration system and the magnetic circuit system, and a second portion integrally extending downward from the first portion beyond a bottom surface of the magnetic circuit system. A second end portion of the shell is integrally provided with a shell bottom wall or separately mounted with a lower cover plate; and a rear cavity in communication with the rear sound hole is formed.

Abstract: The invention relates to the field of hearing aids and earphones. More specifically, the invention relates to a universal adapter for earphones and hearing aids worn in the ear. The universal adapter serves for the introduction of amplified sound of a hearing aid or earphone into the auditory canal, wherein the adapter has trapezoidal hollow segments (5) which are arranged separate from one another, with their side walls (15) that radially decrease from the dorsal to the proximal side, along a centrally arranged locking nipple (2) which serves to receive a sound outlet connector of the hearing aid. The hollow segments (5) are connected with the proximal ends (14) of the contact surfaces (1) to a proximal end (6) of the locking nipple (2). The adapter has the shape of a shortened ellipsoidal body. It can automatically adapt to the shape of the auditory canal.

Abstract: The invention provides a screen sounding device, including a frame; a screen installed on the frame; and a driving device arranged between the frame and the screen for driving the screen to generate sound. The driving device includes a magnetic circuit system fixed on the screen and an electromagnet for driving the magnetic circuit system. The magnetic circuit system includes a connection covering plate fixed on the screen and a magnet fixed on a side of the connection covering plate away from one of the screen, and the magnet is arranged around the electromagnet. By virtue of the configuration, the driving force is greater and the sound performance is improved.

Abstract: Disclosed is a bonding structure of a diaphragm for a receiver and a method thereof. The diaphragm of the receiver includes a center diaphragm and a side diaphragm elastically supporting the center diaphragm, formed by heat and pneumatic pressure, and bonded to the center diaphragm. At least one of the center diaphragm and the side diaphragm is formed of a thermoplastic elastomer film.

Abstract: The invention relates to a loudspeaker unit (10), which includes a housing (12) that has a peripheral housing edge (14) and a front element (20), and a loudspeaker, which is arranged inside the housing (12), wherein the loudspeaker has an in particular dome-shaped diaphragm, which is arranged behind the front element (20). In order to improve the loudspeaker unit (10) having the loudspeaker and the housing (12), according to the invention, the front element (20) has a multiplicity of passage openings (26), and the individual passage openings (26) are formed in the manner of a labyrinth.

Abstract: A method for self-calibrating of a hearing device (which includes an ear canal microphone, an external microphone, and a receiver) includes: obtaining an input signal with the external microphone; providing an output signal with the receiver; measuring the output signal using the ear canal microphone; predicting an output response based on a gain setting; determining a difference between the predicted output response and the measured output signal; and calibrating the hearing device by controlling a gain parameter based on the difference.

Abstract: A micro-electro-mechanical system (MEMS) microphone is provided. The MEMS microphone includes a substrate, a backplate disposed on a side of the substrate, and a diaphragm movably disposed between the substrate and the backplate. The diaphragm includes a plurality of implantation portions, and the implantation portions have different concentration-depth profiles.

Abstract: The display device comprises: a display panel; a sound generator under the display panel; a frame disposed under the display panel and the sound generator; and a porous layer disposed adjacent to the sound generator between the display panel and the frame and having a plurality of air pockets, wherein the porous layer has a porosity of about 90% or more.

Abstract: A micro speaker capable of preventing voice coil rubbing, including an outer casing provided with a holding space, a diaphragm installed within the holding space, a magnet provided with an axis, a voice coil encircling the exterior of the magnet and connected to a diaphragm, and an elastic connecting member connected between the voice coil and the magnet. The diaphragm is disposed on the first end, and the magnet is disposed on the second end of the holding space so as to be separated from the diaphragm. The elastic connecting member is used to maintain a clearance between the voice coil and the magnet. After a signal voltage is fed into the voice coil, the diaphragm extends along the axis causing amplitudes of vibration, and the elastic connecting member reduces amplitudes of deflection produced along the axis, thereby preventing rubbing between the voice coil and the magnet from occurring.

Abstract: The present disclosure provides a sound generating device, which includes a frame, a vibration system, and a magnetic circuit system. The vibration system includes a membrane, a dome, and an air-permeable isolating piece. The membrane is fixed to the frame and configured to define an inner sound generating cavity together with the frame and the magnetic circuit system. The vibrating membrane includes a vibrating part, a suspension, and a fixing part, the vibrating part defining a first through hole communicated with the inner sound generating cavity. The dome is attached to a side of the vibrating part, and the dome defines a second through hole communicating with the first through hole. The air-permeable isolating piece is attached to a side of the dome, and a side of the air-permeable isolating piece is sunken to form a leakage groove communicating with the second through hole.

Abstract: The invention discloses a screen sounding device including a frame, a screen, and a driving device. The driving device has a magnetic circuit system fixed on screen, an electromagnet driving the magnetic circuit system to vibrate and fixed on the frame and an elastic connector connecting magnetic circuit system and electromagnet. The magnetic circuit system includes a magnet arranged around the electromagnet and a magnetic frame fixing the magnet. The magnetic frame includes a top wall fixed to the screen, a bottom wall arranged opposite to top wall and a side wall connecting the top wall and the bottom wall. The magnet is fixed on a side surface of the side wall facing the electromagnet. Applying the technical solution can meet low energy consumption and provide adequate stronger driving force.

Abstract: A speaker device (1) having a frame (2), two opposite directed diaphragms (3, 3?), and two speaker drivers, each having at least one magnetic driver (10, 10?) for driving the two opposite directed diaphragms (3, 3?) in operation. A speaker damper (5, 5?) is associated with each of the two opposite directed diaphragms (3, 3?), and has a coil bracket (4, 4?) arranged to be driven by the associated at least one magnetic driver (10, 10?), a diaphragm connection member (6, 6?) arranged to fixedly attach the diaphragm (3, 3?) to the speaker damper (5, 5?), and a damper frame connection member (8, 8?) arranged to fixate the speaker damper (5, 5?) to the frame (2). The speaker damper (5, 5?) further comprises a damper leg member (7, 7?) arranged between the diaphragm connection member (6, 6?) and the damper frame connection member (8, 8?).

Abstract: A diaphragm assembly for a miniature acoustical transducer having a sufficiently light paddle to allow good audio performance and a sufficiently stiff frame to allow handling. The paddle may be made of a thin sheet of aluminium and the frame of thicker aluminium or a bent sheet of aluminium.

Abstract: A hearing device comprises an input transducer providing an input gain GI, a signal processor comprising a compressor for determining a frequency and level dependent desired compressor gain GP to compensate for a hearing impairment of the user, and to provide a resulting compressor gain G?P, and an output transducer for providing output stimuli perceivable as sound for the user based on a processed signal, the output transducer providing an output gain, GO. A resulting forward path gain G? is defined in a logarithmic representation as GI+G?P+GO. The hearing device further comprises a loop gain estimator for continuously estimating a current loop gain ?L(n), configured to provide a loop gain estimate within a predefined number of feedback loop delays after a feedback buildup has started, and a loop gain controller for dynamically controlling said resulting forward path gain G? in dependence of said estimate of said current loop gain ?L(n).

Abstract: The present disclosure provides methods and systems for reducing noise induced in one or more components in a hearing aid. The present disclosure provides methods for reducing noise induced in telecoils.

Abstract: An electroacoustic transducer includes: a diaphragm; a magnetic circuit having a magnetic gap; a frame that holds the diaphragm and the magnetic circuit; a voice coil having one end portion positioned within the magnetic gap and the other end portion coupled to the diaphragm; and a low friction material that is disposed in a sliding portion formed by the voice coil and the magnetic circuit, and includes polymer compounds swollen with liquid.

Abstract: A movable diaphragm comprises a layer having a disc shape with undulating waves that extend from an inner diameter to an outer diameter. The layer is to be offset from a stationary surface and displaced toward the stationary surface, the displacement of the layer to effectively cause a respective compression and rarefaction of air between the layer and the stationary surface to an external environment. An annular surround is to seal outer edge portion of the layer to a transducer component, the surround having compliant properties to allow the displacement of the layer relative to the stationary surface and the transducer component without breaking the seal. The undulations increases an effective surface area of the layer to lower an overall size of the transducer that would otherwise be needed for a low frequency speaker.

Abstract: The present invention pertains to a method for charging a rechargeable battery (5) of a hearing aid (1). The proposed method comprises detecting a power supply (8) being connected to the hearing aid (1), estimating a state of charge of the battery (5), selecting one of at least a normal and a fast charging mode in dependence of the estimated state of charge, and charging the battery (5) according to the selected charging mode. Moreover, the present invention provides a hearing aid (1) including a battery charging unit (9) and adapted to support the proposed method.

Abstract: A dome material, a diaphragm and a speaker are provided. The speaker includes the diaphragm made of the dome material. The dome material includes an intermediate layer, an adhesive layer, a film layer, and a surface layer. The adhesive layer, the film layer, and the surface layer are sequentially stacked on the intermediate layer in a direction away from the intermediate layer. The intermediate layer is formed by a foamed material. A thickness of the adhesive layer is 3-20 ?m. The film layer is adhered to the intermediate layer via the adhesive layer. A thickness of the film layer is 2-20 ?m. The surface layer adopts fiber prepreg including fiber and resin, the fiber is unidirectionally arranged, and a weight percentage of the fiber is 20%-50%. A surface density of the fiber prepreg is 10-100 g/m2.