Abstract: A speaker frame, and corresponding speaker, may have tapered spokes that form a radial triangular pattern with an apex converging near the frame's mounting flange, for example, near tabs including mounting holes where the frame attaches to a speaker baffle. The tapered spokes may include a triangular cut-out region defining a pair of converging legs that converge at the mounting flange. The width, curvature, and the angle of the spokes may allow for a thin and lightweight configuration with uniformly distributed minimal stress.

Abstract: A hearing aid assembly includes a receiver speaker enclosed within a receiver housing. The receiver housing defines a circuitous receiver acoustic channel, wherein the receiver channel defines an open side along at least a portion of the receiver channel. The receiver channel also defines a pass-through passage extending from a first side of the receiver housing to a second side of the receiver housing, wherein the pass-through passage is partially defined by the wall defining a receiver opening. The hearing aid assembly also includes an earbud configured to fit over at least a portion of the receiver housing and partially cover the open side of the receiver channel.

Abstract: A MEMS microphone includes a substrate having a cavity defining a vibration area and a peripheral area surrounding the vibration area, a back plate disposed over the substrate and having a plurality of acoustic holes, a diaphragm disposed between the substrate and the back plate to cover the cavity, the diaphragm defining an air gap together with the back plate, and the diaphragm sensing an acoustic pressure to generate a displacement, a plurality of anchors arranged along a circumference of the diaphragm, and spaced apart from each other to define a plurality of slits configured to serve as first vent channels for communicating the air gap with the cavity, and at least one vent hole penetrating through the diaphragm, and serving as a second vent channel for communicating the air gap with the cavity.

Abstract: A planar magnetic driver including a radiating surface having a trace-free central region is described. The driver has a magnet defining an acoustic opening on a central axis. A diaphragm of the planar magnetic driver is held by mounts having a mounting profile around the central axis, and the diaphragm includes a radiating surface facing the acoustic opening. An innermost conductive trace on the diaphragm extends around a central region of the radiating surface within a magnetic flux of the magnet such that no conductive traces are on the central region. A radial distance between the innermost conductive trace and the mounting profile is less than another radial distance between the innermost conductive trace and the central axis. Accordingly, an excursion range of the diaphragm along the central axis is greater than a gap distance between the conductive trace and the magnet. Other aspects are also described and claimed.

Abstract: An oscillator (4) for warping to oscillate due to expansion and contraction of a piezoelectric layer, having a tabular shape and including a substrate and the piezoelectric layer layered on the substrate. A casing (2) has an internal space (2C) accommodating the oscillator (4) and a fixing section (2D) fixing the circumferential edge of the oscillator (4). The casing (2) is conductive of oscillations transmitted from the oscillator (4) via the fixing section (2D) to the outside. A signal input unit (3) receives an audio voltage signal input from a smartphone and applies the signal to the piezoelectric layer. The oscillator (4) has a main surface (4A) having an entire width W1 longer than the entire width of the fixing section (2D) in a direction orthogonal to a direction from the fixing section (2D) to the center of the oscillator (4).

Abstract: An acoustic meta material (AMM) spiral device for passive amplification of sound is described. The AMM amplifier device employs at least one deep sub-wavelength spiral design with high refraction index, based on an exponential spiral shape. The AMM spiral amplifier is used to focus on low frequency sound amplification and to cover broadband frequency range. Sound emanating from a speaker travels into a spiral channel until reaching the apex of the spiral. When twin spirals are used, the sound then enters a second spiral for radiating into open air.

Abstract: A microphone package structure includes a substrate, a metal housing, a MEMS microphone component and at least one integrated circuit component. The substrate has a first surface and a second surface that are opposite to each other. The metal housing is located on the first surface such that the substrate and the metal housing collectively define a hollow chamber. The MEMS microphone component is located on the metal housing and within the hollow chamber. The at least one integrated circuit component is located within a region of the second surface on which the metal housing has a vertical projection.

Abstract: The present subject matter provides a hearing device with selective adjustment of processor settings based on various characteristics of an input sound, in response to adjustment of output sound volume by a user. This addresses problems of undesirable sound effects resulting from applying same changes to processor settings to input sounds of all levels, frequencies, and classes.

Abstract: Disclosed wireless systems, devices, and methods can leverage existing hardware for BLE communications to provide a low-latency streaming (LLS) link suitable for supporting CROS and BiCROS features in hearing aids. An illustrative embodiment of a low-latency audio streaming method includes: (a) sending intermittent packets of digital audio data as a wireless signal; and (b) for each intermittent packet: (A) listening for a responsive packet; and (B) sending the digital audio data in a retransmitted packet only if no responsive packet is detected. Any retransmitted packet that is sent follows the corresponding intermittent packet with a delay no greater than a length of two interframe spacing (IFS) intervals separated by a responsive packet. An illustrative embodiment of a low-latency audio streaming device includes a transmit chain and a receive chain. The transmit chain periodically transmits intermittent packets of digital audio data as a wireless signal.

Abstract: An acoustic transducer for generating electrical signals in response to acoustic signals, comprises a first diaphragm having a first corrugation formed therein. A second diaphragm has a second corrugation formed therein, and is spaced apart from the first diaphragm such that a cavity having a pressure lower than atmospheric pressure is formed therebetween. A back plate is disposed between the first diaphragm and the second diaphragm. One or more posts extend from at least one of the first diaphragm or the second diaphragm towards the other through the back plate. The one or more posts prevent each of the first diaphragm and the second diaphragm from contacting the back plate due to movement of the first diaphragm and/or the second diaphragm towards the back plate. Each of the first corrugation and the second corrugation protrude outwardly from the first diaphragm and the second diaphragm, respectively, away from the back plate.

Abstract: An audio activity detector device is disclosed. The audio activity detector device comprises a closed loop feedback regulating circuit that supplies an input signal representative of a time-varying voltage signal to a quantizer circuit, wherein the quantizer circuit, as a function of the input signal, converts the input signal to a quantizer discrete-time signal; a first circuit that, as a function of the discrete-time signal, determines a key quantizer statistic value for the quantizer discrete-time signal; and a second circuit that, as a function of the key quantizer statistic value, determines a signal statistic value for the input signal and a gain control value.

Abstract: The disclosure presents a method of operating a switched capacitor voltage converter and a switched capacitor voltage converter, where the switched capacitor voltage converter comprises a power source, a bucket capacitance, an output capacitance with output capacitance terminals to be connected to a load and switches. The power source provides an input voltage and the output capacitance provides an output voltage over the output capacitance terminals. The output voltage is different from the input voltage, i.e higher or lower or of opposite polarity. The switches are configured to provide at least two phases, a bucket capacitance charging phase and a bucket capacitance discharging phase. In case of a voltage up-converter in the bucket capacitance charging phase the bucket capacitance is connected to the power source for charging the bucket capacitance while the bucket capacitance is not connected to the output capacitance.

Abstract: The present disclosure provides a speaker, including a vibration unit, a magnetic circuit unit for driving the vibration unit to vibrate and emit sound, and a holder for fixing the magnetic circuit unit. The magnetic circuit unit includes a magnetic frame fixed in the holder and a magnet received in the magnetic frame. the magnetic frame includes a bottom wall connected to the magnet, a sidewall extending from the bottom wall while being bent towards the vibration unit, a positioning boss that is formed by die molding from the sidewall, protrudes out of the sidewall and is close to the holder, and a recess formed by recessing from a surface of the sidewall facing the magnet in a direction facing away from the magnet. The recess corresponds to the positioning boss. A size of the recess gradually decreases along a direction facing away from the magnet.

Abstract: Embodiments provide a MEMS microphone comprising a MEMS microphone unit and a modulator connected downstream the MEMS microphone unit. The modulator is configured to apply a defined phase shift to a signal to be modulated.

Abstract: A piezoelectric sounding element includes a diaphragm made of metal and a piezoelectric element provided on at least one surface of the diaphragm. A non-fixed portion of the diaphragm includes the pair of long sides facing each other, a pair of short sides, shorter than the long sides, that face each other, and a pair of recesses, provided in the pair of long sides, that protrude so as to approach each other. The piezoelectric element is provided in a region between the pair of recesses of the diaphragm and the contour shapes of the non-fixed portion of the diaphragm and the piezoelectric element are defined so as to be symmetric with respect to a first imaginary line that bisects the pair of short sides and symmetric with respect to a second imaginary line that bisects the pair of long sides.

Abstract: This disclosure provides a method, performed at a hearing device, for updating a hearing device configuration at the hearing device of a hearing system. The hearing system comprises the hearing device, a fitting device configured to be controlled by a dispenser and a server device. The method comprises receiving a configuration package and a configuration authentication package, the configuration authentication package comprising a dispenser certificate. The method comprises determining if an update criterion is fulfilled. The update criterion is based on verifying the configuration authentication package. The method comprises updating the hearing device configuration based on the configuration package if the update criterion is fulfilled.

Abstract: The invention relates to a device for producing sound and vibration (10) for a user to hear and feel via surface contact, which comprises a damper mass plate (15) and an inertial actuator (16) attached thereto, which inertial actuator (16) comprises a damper mass (14), which is via a primary suspension (11) supported in a springing manner on the inertial actuator (16) to be moving substantially in one linear direction, which inertial actuator comprises a power source for the damper mass (14). The device (10) comprises a secondary suspension (12) and a mechanical limiter (13) for improving the performance of the inertial actuator and/or protecting it from external disturbances.

Abstract: The present disclosure provides a speaker having a lower magnetic conductive plate for carrying a magnet thereon and an upper magnetic conductive plate engaging with the lower magnetic conductive plate. The lower magnetic conductive plate includes a first oblique portion and a first horizontal portion for increasing an outer diameter of the lower magnetic conductive plate. The upper magnetic conductive plate includes a second oblique portion and a second horizontal portion both for increasing an outer diameter of the upper magnetic conductive plate. The lower and upper magnetic conductive plates cooperatively form a receiving space for accommodating a suspension to support a coil assembly. The lower magnetic conductive plate further includes a protruding portion extending perpendicularly from a middle portion of the bottom for carrying the magnet. The suspension is used for supporting the coil assembly for providing balanced vibration to the diaphragm.

Abstract: A speaker mounting system having a driver housing and a plurality of clamping assemblies is disclosed. The driver housing includes a face surrounded by a flange, a driver and a central axis. The clamping assemblies are coupled to the driver housing, each including an enclosure, a dog ear, an actuator, and a biasing element. Each dog ear has a core, a threading, and an arm, is rotatably coupled to the enclosure along a first axis, and slideable along a path. Each actuator has a body and a threading, and is rotatably coupled to the enclosure along a second axis. Each biasing element biases the dog ear towards the face. Each clamping assembly is movable between a hidden configuration, an extended configuration, and a tightened configuration. The speaker mounting system may also include a powered rough-in assembly having a mounting frame and a wiring block with two terminals and two wires.

Abstract: A sound producing device (SPD) is provided. The SPD comprises a membrane, having a resonance frequency and a resonance bandwidth; and an actuator, disposed on the membrane, receiving a driving signal corresponding to an input audio signal; wherein the input audio signal has an input audio band which is upper bounded by a maximum frequency; wherein the resonance frequency is higher than the maximum frequency plus a half of the resonance bandwidth.