Abstract: A vibration apparatus includes a substrate, an elastic piece, a magnetic component and at least two coils. The substrate abuts on a display panel of a mobile terminal; the at least two cods are fixed on an inner side surface of the substrate; the inner side surface faces away from the display panel; the at least two coils are disposed coaxially; and axes of the at least two coils are perpendicular to the substrate. A first side surface of the elastic piece abuts on the inner side surface of the substrate; the magnetic component is connected to a second side surface of the elastic piece; the second side surface is disposed away from the first side surface. The at least two cods are at least in part accommodated in an annular accommodating groove of the magnetic component.

Abstract: In at least one embodiment, an audio amplifier system is provided. The system includes a loudspeaker and an audio amplifier. The loudspeaker transmits an audio output into a listening environment. The audio amplifier is programmed to receive an audio input signal and to generate an excursion signal corresponding to a first excursion level of the voice coil based on the audio input signal. The audio amplifier is further programmed to limit the excursion signal to reach a maximum excursion level and to determine a target pressure for an enclosure of the loudspeaker based on the maximum excursion level. The audio amplifier is further programmed to generate a target current signal based at least on the target pressure and to convert the target current signal into a target voltage signal to a target driving signal to drive the voice coil to reach the maximum excursion level.

Abstract: Systems and methods electrically connect a sealed speaker and speaker back volume without wires. An electronic device includes a speaker with a first and second speaker contacts, a speaker box coupled with the speaker, and a printed circuit board (PCB) having a first and second contact pads. A speaker gasket is positioned between the speaker and the speaker box to form a seal. First and second spring strips electrically connect the first and second contact pads to the first and second speaker contacts, respectively, and each has a flat, thin cross-section in at least a portion extending between the speaker gasket and the speaker box. The first and second spring strips do not adversely affect the seal, do not require glue or sealer, and electrically connect with the first and second contact pads as the enclosure of the electronic device is closed.

Abstract: A method and a system for vision-based defect detection are proposed. The method includes the following steps. A test audio signal is outputted to a device-under-test (DUT), and a response signal of the DUT with respect to the test audio signal is received to generate a received audio signal. Signal processing is performed on the received audio signal to generate a spectrogram, and whether the DUT has an unacceptable defect with respect to the predefined auditory standard is determined by analyzing a distribution of signal strength according to the spectrogram.

Abstract: A thin double-sided vibrating speaker includes a magnet member, a first vibration assembly and a second vibration assembly; the magnet member includes a main magnetic plate, a first magnetic path unit, a second magnetic path unit and side magnetic path units, the first magnetic path unit is disposed on one surface of the main magnetic plate, the second magnetic path unit is disposed on another surface of the main magnetic plate, the side magnetic path units are disposed on the main magnetic plate and correspond to two sides of the first magnetic path unit, the first vibration assembly is disposed on one surface of the magnet member, and the second vibration assembly is disposed on another surface of the magnet member. Accordingly, in addition to achieving the requirement of thinning, the thin double-sided vibrating speaker of the present disclosure also has the effect of vibration reduction and two-way sounding.

Abstract: A compact directional acoustic sensor having an improved signal-to-noise ratio is disclosed. The disclosed directional acoustic sensor includes a first sensing device configured to generate different output gains based on different input directions of external energy, and configured to generate at least one first output signal having a first polarity based on external energy received from an input direction; a second sensing device configured to generate different output gains based on different input directions of external energy, and configured to generate at least one second output signal having a second polarity, that is different than the first polarity, based on the external energy received from the input direction; and at least one signal processor configured to generate at least one final output signal based on the at least one first output signal and the at least one second output signal.

Abstract: A compact directional acoustic sensor having an improved signal-to-noise ratio is disclosed. The disclosed directional acoustic sensor includes a first sensing device configured to generate different output gains based on different input directions of external energy, and configured to generate at least one first output signal having a first polarity based on external energy received from an input direction; a second sensing device configured to generate different output gains based on different input directions of external energy, and configured to generate at least one second output signal having a second polarity, that is different than the first polarity, based on the external energy received from the input direction; and at least one signal processor configured to generate at least one final output signal based on the at least one first output signal and the at least one second output signal.

Abstract: An image capture device includes a housing that includes a pattern of apertures and a microphone disposed within the housing and proximate to the apertures. The image capture device includes a membrane assembly. The membrane assembly includes a support disposed between the housing and the microphone and a channel defined in the support that directs sound waves from only one of the apertures in the pattern to the microphone. The membrane assembly further includes a membrane that extends across the channel and separates the one of the apertures and the microphone.

Abstract: An own voice suppression apparatus applicable to a hearing aid is disclosed. The own voice suppression apparatus comprises: an air conduction sensor, an own voice indication module and a suppression module. The air conduction sensor is configured to generate an audio signal. The own voice indication module is configured to generate an indication signal according to at least one of user's mouth vibration information and user's voice feature vector comparison result. The suppression module coupled to the air conduction sensor and the own voice indication module is configured to generate an own-voice-suppressed signal according to the indication signal and the audio signal.

Abstract: A comb-like capacitive microphone includes a substrate penetrated by a cavity having an upper part provided with a step, stationary electrodes equally spaced on the step, and a diaphragm received in the step and including a vibrating portion and a connecting portion connected to the vibrating portion. Movable electrodes protrude from a periphery of the vibrating portion, and an end of the connecting portion away from the vibrating portion is connected to the substrate. The stationary electrodes are arranged in a comb shape and directly etched on the substrate, and the movable electrodes are arranged in a comb shape. The stationary electrodes are spatially separated from the movable electrodes, each stationary electrode is corresponding to each movable electrode. Such structure of the comb-like capacitive microphone offers a relatively large displacement, to decrease the acoustic noise and to offer a high sensitivity, and eventually a sound transducer with high performances.

Abstract: Articles and methods are provided for miniature acoustic transducers having highly compliant suspension systems despite their small size. In various examples the suspension system is molded of a liquid silicone rubber (LSR) and is molded in an interior cavity geometry that includes at least one of a radial offset or an axial offset from a desired geometry of the suspension.

Abstract: The present disclosure relates to an acoustic output device including an earphone core, a controller, a Bluetooth module, and a button module. The earphone core may include at least one low-frequency acoustic driver configured to output sounds from at least two first guiding holes and at least one high-frequency acoustic driver configured to output sounds from at least two second guiding holes. The controller may be configured to direct the at least one low-frequency acoustic driver to output the sounds in a first frequency range and direct the at least one high-frequency acoustic driver to output the sounds in a second frequency range. The Bluetooth module may be configured to connect the acoustic output device with at least one terminal device. The button module may be configured to implement an interaction between a user of the acoustic output device and the acoustic output device.

Abstract: Systems and methods for improved control and performance of cochlear implants are disclosed. In an embodiment, the audio environment is sampled, and a neural network determines suggested filter setting for the cochlear implant. The process is repeated such that, as the user moves through various audio environments having differing noise levels, satisfactory performance of the cochlear implant is maintained for the user.

Abstract: An electronic device including a display panel, a protection layer, and a sound broadcasting element is provided. The display panel is disposed on an inner surface of the protection layer. The sound broadcasting element is disposed on the inner surface of the protection layer and includes a piezoelectric component and a connection component. The connection component is located on a side of the display panel, the connection component contacts the protection layer and is connected between the piezoelectric component and the protection layer. A back surface of the display panel is located between the piezoelectric component and the protection layer, wherein the back surface of the display panel is a surface away from the protection layer.

Abstract: A loudspeaker assembly for a vehicle includes a loudspeaker having a first side and an opposed second side, wherein the loudspeaker is configured to generate an acoustical signal having a front wave directed into an interior of the vehicle and a rear wave directed toward an exterior of the vehicle. The loudspeaker assembly further includes a coupler disposed on the second side of the loudspeaker, the coupler including an inlet portion for receiving the loudspeaker and an outlet portion. A flexible port is removably connectable to the coupler, the flexible port including an inlet end arranged to be connected to the outlet portion of the coupler, an outlet end arranged to be connected to an opening in an exterior body panel, and an elongated body extending between the inlet end and the outlet end, the flexible port configured to transmit the rear wave to the exterior of the vehicle.

Abstract: Embodiments of the present disclosure are directed to systems and methods for improving functional hearing. In one aspect, the system may include a housing configured to fit within an ear of a user. The housing may include a speaker, an amplifier, a transmitter, and a power supply. Additionally, the housing may include a memory storing instructions and at least one processor configured to execute instructions. The instructions may include receiving an audio input and amplifying the audio input. The instructions may include outputting the amplified audio input from a speaker. The instructions may include converting the audio input into a visual representation of the audio input and transmitting the visual representation to at least one display.

Abstract: This application discloses an IPD parameter encoding method, including: obtaining a reference parameter used to determine an IPD parameter encoding scheme of a current frame of a multi-channel signal; determining the IPD parameter encoding scheme of the current frame based on the reference parameter, where the determined IPD parameter encoding scheme of the current frame is one of at least two preset IPD parameter encoding schemes; and processing an IPD parameter of the current frame based on the determined IPD parameter encoding scheme of the current frame. The technical solutions provided in this application can improve encoding quality of the multi-channel signal.

Abstract: Provided in this disclosure is an acoustic adapter which includes an interior enclosure for substantially surrounding a back of a speaker driver and for defining a predetermined three-dimensional interior volume (3DV1) around the back of the speaker driver to thereby act as a vibration dampener. An exterior enclosure is provided having a configuration that corresponds to a configuration of the interior enclosure and spaced apart from the interior enclosure to define a restricted two-dimensional volume (2DV) outside the three-dimensional interior volume. An aperture is formed in the interior surface of the enclosure for admitting sound into the two-dimensional volume. A foam material is received within the two-dimensional volume (2DV) for at least coating an inner surface of the exterior enclosure, to provide a frictional surface for damping the sound admitted into the two-dimensional volume.

Abstract: Secondary path measurements and associated acoustic transducer-to-eardrum responses are obtained from test subjects. Both a least squares estimate and a reduced dimensionality estimate are determined that both estimate a relative transfer function between the secondary path measurements and the associated acoustic transducer-to-eardrum responses. An individual secondary path measurement for a user is performed based on a test signal transmitted via a hearing device into an ear canal of the user. An individual cutoff frequency for the individual secondary path measurement is determined. First and second acoustic transducer-to-eardrum responses below and above the cutoff frequency are determined using the individual secondary path measurement and the least squares estimate. A sound pressure level at an eardrum of the user can be predicted using the first and second receiver-to-eardrum responses.

Abstract: A speaker device includes a frame, a vibration unit fixedly connected to the frame, a magnetic circuit unit having a magnetic gap, and a screen cloth. The vibration unit includes a diaphragm and a voice coil. The magnetic circuit unit includes a carrier, a first main magnet, an auxiliary magnet and a magnetic conductive plate. The magnetic conductive plate is fixed to the frame. The magnetic conductive plate includes a first central portion and a first edge portion; the auxiliary magnet is located at the first central portion. The first edge portion is provided with a through hole. The screen cloth is provided at a side of the carrier away from the diaphragm, and includes a second central portion and a second edge portion. The second edge portion is provided with a first groove recessed toward the magnetic conductive plate, corresponding to the through hole.