Abstract: Embodiments of the present invention provide improved methods and apparatus suitable for use with hearing devices. A vapor deposition process can be used to make a retention structure having a shape profile corresponding to a tissue surface, such as a retention structure having a shape profile corresponding to one or more of an eardrum, the eardrum annulus, or a skin of the ear canal. The retention structure can be resilient and may comprise an anatomically accurate shape profile corresponding to a portion of the ear, such that the resilient retention structure provides mechanical stability for an output transducer assembly placed in the ear for an extended time. The output transducer may couple to the eardrum with direct mechanical coupling or acoustic coupling when retained in the ear canal with the retention structure.

Abstract: The present application relates to structures for supporting mechanical, electrical and/or electromechanical components, devices and/or systems and to methods of fabricating such structures. The application describes a primary die comprising an aperture extending through the die. The aperture is suitable for receiving a secondary die. A secondary die may be provided within the aperture of the primary die.

Abstract: An electrodynamic actuator (1a, 1b) is disclosed, which is designed to be connected to a plate like structure (2) and which comprises a coil arrangement (3a, 3b) with at least one voice coil (4a, 4b), a magnet system (5) with a movable magnetic circuit part (7, 7a . . . 7f) and a static magnetic circuit part (6a . . . 6F) and a spring arrangement (12) coupling the static magnetic circuit part (6a . . . 6F) to the movable magnetic circuit part (7, 7a . . . 7f) and allowing a relative movement between the same. Both the spring arrangement (12) and the magnet system (5) provide a total restoring force (FT) directed towards an idle position (P0) of the movable magnetic circuit part (7, 7a . . . 7f). A part of a total restoring force gradient (?FT/?z) caused by the magnet system (5) is at least 10% of the total restoring force gradient (?FT/?z) in said idle position (P0) of the movable magnetic circuit part (7, 7a . . . 7f).

Abstract: Various implementations include vehicle headrest configurations and related audio systems. In some cases, a headrest includes: a main body having a front surface to support a back of a user's head and a pair of acoustic channels each formed in part by a side wall having a front edge that is offset from the front surface, the main body having a portion configured to receive first and second transducers, where a transducer mount in each of the pair of acoustic channels for mounting respective ones of the first and second transducers, wherein a dimension (Dimension C) is defined by a rotation angle of the transducer mount relative to a centerline of the vehicle headrest, wherein Dimension C is approximately ?20 degrees to approximately zero degrees.

Abstract: Disclosed is a sound production device including a housing and a vibration assembly, the vibration assembly comprising a vibration diaphragm and a voice coil combined to one side of the vibration diaphragm; wherein the sound production device further comprises a system stabilization component connected with the voice coil; the system stabilization component is of a line-like structure formed by winding a metal wire, and comprises a first connection part connected to the voice coil, a deformation part, and a second connection part connected to the housing. By adopting the sound production device of this structure, the voice coil will not be polarized under the condition of large displacement, and the system stabilization component having a novel structure does not hinder the free vibration of the voice coil either.

Abstract: A hearing device and a method for power supply management of a hearing device is provided, the hearing device comprising a processing unit; a main power source; a first power supply connected to the main power source unit; a magnetic induction unit configured for reception and transmission of wireless signals; wherein the hearing device is configured to deactivate the first power supply during reception of wireless signals.

Abstract: Disclosed is a micro-filter comprising a substrate with a back cavity and a film layer provided on the substrate and suspended above the back cavity; the film layer has through holes distributed thereon, and is made of an amorphous metal film. Also disclosed is an acoustic device comprising the micro-filter.

Abstract: A speaker diaphragm includes a first lamination region and a second lamination region. In the first lamination region, a plurality of layers are laminated in a thickness direction of the speaker diaphragm. In the second lamination region, a plurality of layers different in number from the plurality of layers in the first lamination region are laminated. The second lamination region is different from first lamination region in average density.

Abstract: A method for manufacturing a loudspeaker vibrating membrane with hard and elastic soft properties, comprising: (a) adhering a curable polymer to all areas on the outer surface of a base material; (b) drying the curable polymer to form a hard structure; (c) forming a loudspeaker vibrating membrane; and (d) separating the loudspeaker vibrating membrane from the base material. The method further comprises the following steps between steps (b) and (c) or steps (c) and (d), or after step (d): (e) adhering an elastic soft polymer to all or partial areas on the outer surface of the hard structure; and (f) drying the elastic soft polymer to form an elastic soft structure covering all or partial areas on the outer surface of the hard structure. In the present invention, the hardness and elastic coefficient of the loudspeaker vibrating membrane can be adjusted by the hard structure and the elastic soft structure.

Abstract: A balanced armature receiver includes a gas permeable barrier located on a portion of the receiver defining a back volume to provide barometric relief. The barrier can be located in a wall portion or diaphragm of the receiver to vent the back volume to an exterior of the receiver directly, via a front volume, or via a nozzle. The gas permeable barrier is impermeable to liquid infiltration and can be configured to influence the low frequency response of the receiver.

Abstract: The present disclosure relates to dual-diaphragm moving-coil audio transducers for hearing devices. The transducer includes a magnetic circuit including an inner portion located between first and second coils coupled to corresponding diaphragms supported by a housing. An outer portion of the magnetic circuit is adjacent outer portions of the first and second coils. The transducer emits sound when the first diaphragm moves in a first direction and the second diaphragm moves in a second direction, opposite the first direction, in response to an electrical audio signal applied to the first and second coils.

Abstract: In one embodiment, the present invention is directed to a method of transmitting information from an ear tip to a contact hearing device, the method comprising the steps of: exciting a transmit coil, the transmit coil being positioned in the ear tip, wherein the transmit coil is wound on a core, the core including a ferromagnetic material; radiating an electromagnetic field from the first coil through the ear canal of a user; receiving the radiated electromagnetic field at a receive coil, the receive coil being positioned on a contact hearing device, the contact hearing device including a receive coil without a ferrite core; and transmitting the information from the transmit coil to the receive coil using, for example, near-field radiation.

Abstract: A planar coil linear actuator/transducer. A stack of individually driven planar coils are used. A common core passes through the center of the stack of coils. A mobile magnet resides in the core. The coils are selectively energized in order to drive the magnet as desired. It is possible to control both frequency and amplitude by controlling the motion of the magnet. In a preferred embodiment, each planar coil is created as a copper (or other conductive material) trace on a multi-layer printed circuit board.

Abstract: Electrodynamic drive for a flat loudspeaker having an enclosure where the following components are installed: a magnetic system, a cylindrical coil fixed to the frame, a sound-emitting membrane attached to the cylindrical coil former, a system holding the coil within a magnetic gap, and flexible wires for supplying an electrical signal to the coil. While the magnetic system is made as a cylindrical permanent magnet, a ferrite ring with the above mentioned cylindrical magnet and washers, joining them into a single structure.

Abstract: A speaker comprises an electroacoustic transducer diaphragm which is mounted between or suspended from multiple suspension pins or suspension components. The suspension pins or suspension components provide mechanical support and acoustic isolation to the diaphragm.

Abstract: A sound-producing balanced armature receiver, as disclosed, includes a receiver housing with a first internal volume, a second internal volume, and a sound outlet. The receiver includes a first diaphragm separating the first internal volume into a first front volume and a first back volume and a second diaphragm separating the second internal volume into a second front volume and a second back volume.

Abstract: Provided is a speaker, including a frame; a vibration unit fixed to the frame; and a magnetic circuit unit driving the vibration unit to vibrate and provided with a magnetic gap. The vibration unit includes a diaphragm fixed to the frame and a voice coil inserted in the magnetic gap to drive the diaphragm to vibrate and produce sound; an outer periphery of the diaphragm bends and extends to form at least one fixing portion; and the at least one fixing portion extends along a vibrating direction of the diaphragm and is attached to an inner peripheral side of the frame. With this structure, the bonding strength of the frame and the diaphragm is improved, the diaphragm does not occupy an outer space of the frame, and an appearance size of the speaker is effectively controlled, thereby facilitating the miniaturization design.

Abstract: Provided is a speaker device, including a frame; a vibration unit fixed to the frame; and a magnetic circuit unit driving the vibration unit to vibrate and produce sound and including a magnetic gap. The vibration unit includes a diaphragm, a voice coil and an elastic support assembly. The frame includes a bottom wall and a side wall bending and extending from a periphery of the bottom wall of the frame, and an outer periphery of the diaphragm is fixed to the side wall. The vibration unit further includes a fixing ring configured to fix the elastic support assembly to the frame, and the fixing ring surrounds the magnetic circuit unit. The frame is made of a metal material, and the fixing ring is a metal ring fixed to the side wall of the frame by welding. With this structure, overall strength and reliability of the speaker device are improved.

Abstract: Face masks and attachments to accommodate hearing aids are provided herein. The face masks include a mask body, ear loops and a hearing aid holder to removably hold a hearing aid. In some configurations, a hearing aid holder which can be detachably attached to a mask is provided.

Abstract: A sounding device includes a frame, and a vibration system and a magnetic circuit unit that are retained in the frame. The vibration system includes diaphragm and voice coil. The voice coil includes two first side edges and two second side edges. The magnetic circuit unit includes yoke, main magnetic body, and auxiliary magnetic body. The auxiliary magnetic body includes first auxiliary magnetic bodies each including main body portion and extension portion. The main body portion is recessed towards side surfaces of two first side edges to form grooves, the main magnetic body protrudes towards the grooves, and the pair of first side edges protrude towards the grooves, respectively. The sounding device can not only enable the auxiliary magnetic body to be more evenly surrounding the voice coil, but also enable the voice coil to have longer circumference with a same magnetic circuit area, thereby increasing BL value.