Abstract: The present disclosure relates to a loudspeaker transducer comprising a diaphragm (112), a frame (120), an inner suspensions element (118) and an outer suspension element (110). The diaphragm (112) comprises a portion turning inwards (102) towards the frame (120). The outer suspension element (110) is located closer than the inner suspension element (118) to the main opening of the frame through which the loudspeaker transducer radiates sound. The inner suspension element (118) is connected to the frame (120) and the inward turning portion (102). The inner suspension element (118) is connected to the inward turning portion (102) at an outer end (203) of the diaphragm.

Abstract: The present invention relates to a bone conduction speaker and its compound vibration device. The compound vibration device comprises a vibration conductive plate and a vibration board, the vibration conductive plate is set to be the first torus, where at least two first rods inside it converge to its center; the vibration board is set as the second torus, where at least two second rods inside it converge to its center. The vibration conductive plate is fixed with the vibration board; the first torus is fixed on a magnetic system, and the second torus comprises a fixed voice coil, which is driven by the magnetic system. The bone conduction speaker in the present invention and its compound vibration device adopt the fixed vibration conductive plate and vibration board, making the technique simpler with a lower cost; because the two adjustable parts in the compound vibration device can adjust both low frequency and high frequency area, the frequency response obtained is flatter and the sound is broader.

Abstract: There is provided a method and corresponding system for generating harmonics based on an input signal.

Abstract: Engineered, pseudo-crystalline materials are formed of repeating arrays or lattices of similar basic elements. The materials are porous, so that a gas such as air can pass through the material. Audio waves propagating through the gas can also pass through the material, and these waves experience a passive, uneven, frequency-dependent modification as a result of passing through the material. The frequency response of this modification can be tuned by selecting the shape, size, and repetition patterns of the basic elements in the lattice, as well as the ingredients from which the pseudo-crystalline materials are made.

Abstract: A speaker comprises a housing, a transducer residing inside the housing, and at least one sound guiding hole located on the housing. The transducer generates vibrations. The vibrations produce a sound wave inside the housing and cause a leaked sound wave spreading outside the housing from a portion of the housing. The at least one sound guiding hole guides the sound wave inside the housing through the at least one sound guiding hole to an outside of the housing. The guided sound wave interferes with the leaked sound wave in a target region. The interference at a specific frequency relates to a distance between the at least one sound guiding hole and the portion of the housing.

Abstract: An acoustic transducer (30), comprising: a support structure (36); an active assembly comprising a base plate (32) supported by the support structure (36) and a piezoelectric body (34) supported by the base plate (32); and a passive vibrator (38) supported by the support structure (36) and coupled via the support structure (36) to the active assembly (32, 34) so that vibration of the active assembly (32, 34) drives the passive vibrator (38). The active assembly (32, 34) and the passive vibrator (38) have the same resonant frequency.

Abstract: A hearing-aid audio control method and system are disclosed. The method includes the steps of obtaining a hearing compensation curve of a hearing-impaired person in advance; receiving and obtaining an original audio signal; using the hearing compensation curve to perform power compensation on a corresponding frequency band of the original audio signal to obtain a hearing-aid audio signal; outputting the hearing-aid audio signal and/or using the hearing-aid audio signal to drive operation of an audio system. The method can use the hearing compensation curve of the hearing-impaired person to perform power compensation on the corresponding frequency band of the original audio signal to obtain the hearing-aid audio signal. By adjusting the volume of the corresponding audio frequency bands, the hearing-impaired can hear the sound clearly, without continuous hearing loss due to excessive volume adjustment and without disturbing other people.

Abstract: A method for personalized sound modification, with a personal sound system having a microphone; a user device which includes a processor, computer readable medium, and optionally the microphone; and a sound output device; is provided. The method includes: providing a user hearing profile including lower and upper limits of the user's auditory dynamic range at a plurality of sound frequencies, prepared with the personal sound system; receiving a sound signal from the microphone; optionally separating the sound signal into a plurality of frequency channels; amplifying or attenuating sound frequencies in the sound signal which have a volume level outside the lower or upper limits of the user's auditory dynamic range, respectively, and forming a modified sound signal with which the sound output device will produce sounds within the user's auditory dynamic range; and providing the modified sound signal to the sound output device.

Abstract: A speaker includes a frame, a vibration assembly and a magnetic circuit assembly. The vibration assembly is assembled on the frame. The magnetic circuit assembly is assembled on the frame. The vibration assembly includes a voice coil and a piezoelectric element, the voice coil and the piezoelectric element are arranged coaxially, and the voice coil is between the piezoelectric element and the magnetic circuit assembly.

Abstract: Provided is speaker, including magnetic circuit unit, frame fixed to the magnetic circuit unit, and first and second sound-producing unit both fixed to the frame. The magnetic circuit unit includes magnetically conductive assembly with lower clamping plate and magnet component located on lower clamping plate. A third magnetic conductor is arranged around the magnet component, first magnetic conductor, and second magnetic conductor. A first and a second voice coil are respectively located in magnetic gaps between third magnetic conductor and second magnetic conductor and between third magnetic conductor and first magnetic conductor. The two sound-producing units share the magnetic circuit unit. The frame includes a first and a second main body portion arranged coaxially and connected to each other, a first diaphragm is fixed to second main body portion, and second diaphragm is fixed between first main body portion and second main body portion.

Abstract: An acoustic processing apparatus according to the present disclosure includes one or more microphones, a first voice processing unit, and a second voice processing unit. The second voice processing unit is connectable between the microphones and the first voice processing unit. The second voice processing unit includes an operational amplifier, an output terminal, an attenuator, and a transistor. The output terminal is connectable to the first voice processing unit. The attenuator is electrically connected between an output node of the operational amplifier and the output terminal.

Abstract: An audio system is proposed, dynamically playing optimized audio signals based on user position. A sensor circuits dynamically senses a target space to generate field context information. First speaker and second speaker are arranged for audio playback. A host device recognizes a user from the field context information, determines the user position corresponding to the target space, and adaptively assigns the user position as a target listening spot. A sensor circuit contains a camera capturing an ambient image out of the target space. A control circuit utilizes a user interface circuit to perform a configuration procedure which determines location, size and acoustic attribute information of an ambient object, and the control circuit accordingly performs a channel-based compensation operation on the target listening spot to generate optimized first channel audio signal and second channel audio signal.

Abstract: A MEMS structure is provided. The MEMS structure includes a substrate and a backplate, the substrate has an opening portion, and the backplate is disposed on one side of the substrate and has acoustic holes. The MEMS structure also includes a diaphragm disposed between the substrate and the backplate, and the diaphragm extends across the opening portion of the substrate and includes outer ventilation holes and inner ventilation holes arranged in a concentric manner. The outer ventilation holes and the inner ventilation holes are relatively arranged in a ring shape and surround the center of the diaphragm. The MEMS structure further includes a pillar disposed between the backplate and the diaphragm. The pillar prevents the diaphragm from being electrically connected to the backplate.

Abstract: The present invention relates generally to the field of microphone connectors, and more particularly to a dual connector including an analog connector and a digital port. The digital port may be positioned directly adjacent or within the analog connector. For example, a Type-C USB port may positioned directly above one or more pins of an XLR connector or between one or more pins of the XLR connector. Advantageously, the microphone may be configured to connect with a variety of host devices and may facilitate functioning as a USB-C microphone via the digital port for producing a 32-bit floating-point recording or audio stream.

Abstract: A method and system is disclosed for a headset with force isolation, where the headset comprises a headband having two upper headband sections coupled by a center block and two ear cups, where each ear cup is coupled to one of the two upper headband sections. The two upper headband sections may include side support strips between which a movable strip may be placed, thereby increasing the rigidness of the headband when fully extended between the side support strips. The rigidness of the headband may decrease when the movable strips are retracted from between the side support strips and into the center block utilizing a slider knob. The side support strips may be plastic and the movable strip may be metal. The center block may be more rigid than the side support strips. The center block may be plastic. The headband may include headband endcaps at lower ends of the headband.

Abstract: The present disclosure provides a microphone including at least one acoustoelectric transducer and an acoustic structure. The acoustoelectric transducer is configured to convert a sound signal to an electrical signal. The acoustic structure includes a sound guiding tube and an acoustic cavity. The acoustic cavity is in acoustic communication with the acoustoelectric transducer, and is in acoustic communication with outside of the microphone through the sound guiding tube. The acoustic structure has a first resonance frequency, the acoustoelectric transducer has a second resonance frequency, and an absolute value of a difference between the first resonance frequency and the second resonance frequency is not less than 100 Hz. By disposing different acoustic structures, resonance peaks in different frequency ranges may be added to the microphone, which improves a sensitivity of the microphone near multiple resonance peaks, thereby improving a sensitivity of the microphone in the entire wide frequency band.

Abstract: The present disclosure relates to a hearing protection device 10, 10? for protection in different hearing situations A, B, C. The device 10, 10? comprises a microphone 30, 30?, 32, 32?, a sound reproduction unit 38 having a loudspeaker 50, 50?, 52, 52? and a controller 60 for processing an ambient electrical signal. The present disclosure further relates to a controller 60 for such a hearing protection 10, 10?. The present disclosure furthermore relates to a method of switching such a hearing protection device 10, 10? in different hearing situations A, B, C.

Abstract: In one embodiment, a microphone with swappable grilles is described. The microphone comprises a microphone body having a lower portion and an upper portion. The microphone also includes electronics disposed in at least the lower portion. The microphone also comprises, an audio transducer disposed in the upper portion and electronically coupled to the electronics. The microphone also includes two, optionally substantially planar, grilles each disposed on an opposite side of the upper portion, where the two grilles are configured to removably attach to the upper portion.

Abstract: An adaptive feedback canceller of an ear-wearable device has an adaptive foreground filter that inserts a feedback cancellation signal into a digitized input signal to produce an error signal. An instability detector of the device is configured to extract wo or more features from the error signal. The instability detector has a machine learning module that determines instability in the error signal based on the two or more features. The instability module changes the adaptive foreground filter in response to determining the instability. The change causes the adaptive foreground filter to have a faster adaptation to perturbations in the error signal compared to a previously used step size.

Abstract: An earphone charger includes an earphone seat fixedly disposed with two charging resilient pieces for respectively abutting against positive and negative conductive strips of a BLUETOOTH earphone, and with an anti-disengagement component preventing the earphone from disengaging from the charging resilient pieces during charging. The charging resilient pieces extend obliquely thereby a distance therebetween gradually decreases along an insertion direction of the earphone. The charger can charge BLUETOOTH earphones of various generations and a working process is that: the earphone is moved to the earphone seat, the charging resilient pieces are deformed laterally under the pressing of the earphone, and then the positive and negative conductive strips abut against the two charging resilient pieces, and moreover, the earphone is tightly attached to the charging resilient pieces through the anti-disengagement component to achieve continuous charging.