Abstract: Example techniques may involve controlling a passive radiator. An implementation may include a device receiving, via a network interface, audio content and generating an audio signal representing the audio content. Generating the audio signal involves modifying portions of the audio content to limit excursion of the speaker driver to less than an excursion limit when a forward prediction model indicates that the portions of the audio content are predicted to cause the speaker driver to move beyond the excursion limit. While playing back the generated audio signal via the audio stage, the device detects, via a sensor, clipping of the speaker driver and generates a feedback signal based on the detected clipping of the speaker driver. The device adjusts the forward prediction model based on the generated feedback signal.

Abstract: The present disclosure discloses a loudspeaker apparatus. The loudspeaker apparatus may include a support connection member configured to contact with a user's head. The loudspeaker apparatus may include at least one loudspeaker assembly. The loudspeaker assembly may include an earphone core and a core housing configured to accommodate the earphone core. The core housing may be fixedly connected to the support connection member. At least one button module may be arranged on the core housing. The interior of the core housing may further include at least two microphones, and the at least two microphones may be arranged at a position different from a user's mouth. The loudspeaker apparatus may further include a control circuit or a battery accommodated in the support connection member. The control circuit or the battery may drive the earphone core to vibrate to generate sound.

Abstract: A headphone device includes a housing, a sound generator and a tube. The housing includes a main body and a cover plate. The cover plate includes a first surface and a second surface. The first surface is disposed towards the main body and connected to the main body to form an internal space. The second surface is disposed opposite to the first surface. The sound generator is disposed in the internal space. The tube includes a tubular body, a first end and a second end. The tubular body is disposed between the first end and the second end. The tubular body has a cross section which is in a closed shape. The second surface of the cover plate is disposed towards the tubular body. The tubular body and the second surface are disposed in parallel or have an included angle less than twenty degrees.

Abstract: An apparatus, including an external component of a medical device configured to generate a magnetic flux that removably retains, via a resulting magnetic retention force, the external component to a recipient thereof, wherein the external component is configured to enable the adjustment of a path of the generated magnetic flux so as to vary the resulting magnetic retention force.

Abstract: A system for positioning an earbud relative to the ear of a person includes an ear frame that extends between a first end and a second end. The ear frame extends in an ear frame plane defined by the first end, the second end, and a top portion. The system further includes an earbud receiver configured to receive a stem of an earbud. The earbud receiver is connected to the ear frame. The earbud receiver defines a bore extending along an earbud receiver axis between a first opening at a first end of the earbud receiver and a second opening at a second end of the receiver. The earbud receiver axis intersects the ear frame plane an angle theta selected to retain the position the earbud relative to the ear of the person. In some embodiments, theta is selected between 5 degrees and 30 degrees.

Abstract: Headphone playback devices can include a cable assembly including a plurality of conductors extending between a first earpiece and a second earpiece. The cable assembly includes a jacket, a power conductor disposed within the jacket and coupled between a power source in the first earpiece and a wireless transceiver in the second earpiece. The cable assembly further includes a microphone conductor at least partially disposed within the jacket and coupled to a microphone in one of the earpieces. A shield is at least partially disposed between the power conductor and the microphone conductor to reduce electromagnetic interference between the two.

Abstract: An electrostatic headphone is provided, comprising a first ear cup assembly, a second ear cup assembly, and a headband assembly coupled to each of the first ear cup assembly and the second ear cup assembly. Each ear cup assembly comprises an electrostatic transducer, a high voltage amplifier electrically coupled to the transducer, and a high voltage power supply electrically coupled to the high voltage amplifier. At least one of the ear cup assemblies further comprises a power source for providing electric power to the high voltage power supply included in the at least one ear cup assembly. In some cases, one or more of the ear cup assemblies further comprises a wireless communication module for receiving audio signals from an audio source.

Abstract: A sound producing package structure includes a first sub-package structure and a second sub-package structure. The first sub-package structure includes a first substrate having a first opening and a first chip including a first membrane, wherein a first cavity is formed between the first membrane and the first substrate. The first sub-package structure and the second sub-package structure are stacked, and the second sub-package structure includes a second substrate and a second chip. The second substrate is connected to the first substrate and has a second opening. The second chip includes a second membrane, wherein a second cavity is formed between the second membrane and the second substrate. A gap, connected to the first opening and the second opening, is formed between the first substrate and the second substrate, such that an ambient of the sound producing package structure, the first cavity and the second cavity are connected.

Abstract: A microelectromechanical system includes an enclosure defining a cavity and an opening communicating with the cavity; a membrane mounted at the opening; a cantilever located within the cavity, the at least one cantilever comprising a first end, a second end and a fulcrum located between the first end and the second end; a plunger positioned between the membrane and the cantilever and configured to transfer displacement of the membrane to the first end of the cantilever; and a sensing member connected to the second end of the cantilever. The distance between the first end and the fulcrum is less than that between the second end and the fulcrum. The microelectromechanical system has the advantages of high SNR, small package size and high sensitivity. The membrane has a stiffness order of magnitude higher than a conventional membrane, which avoids mechanical collapse and large DC deformation under 1 atm.

Abstract: An earpiece including an external surface having a first fixed configuration disposable within the outer ear and having a passage adapted for retention of an in ear device, the earpiece heatable to achieve a moldable condition which allows reconfiguration of the external surface by engagement with the outer ear to dispose the external surface in a second fixed configuration in greater conformity to the outer ear.

Abstract: Micromechanical sound transducer including a plurality of unilaterally suspended bending transducers. The plurality of bending transducers are configured for deflection within a plane of vibration and are arranged side by side within the plane of vibration along a first axis and are extending along a second axis which is transverse to the first axis. The bending transducers are alternately suspended on opposite sides and engage with one another. Each bending transducer includes a first electrode and a second electrode which are located opposite one another along the first axis to cause deflections of the respective bending transducer along the first axis upon application of voltage. Mutually facing electrodes of adjacent bending transducers are electrically connected to one another by a transverse connection crossing the plane of vibration transverse to the first axis.

Abstract: A sound bar having a mounting assembly configured to pivotally secure the bar. The sound bar includes an elongated, at least partially hollow, housing. The housing has a body extending between two opposing ends. A speaker array is positioned in the body. At least one speaker is positioned in at least one end of the bar. The end speaker(s) are preferably bass speakers in fluid communication with the hollow housing. A grill is preferably positioned over at least one of the housing ends. The grill preferably has a center hub affixed to an outer rim by spokes defining open spaces in the grill to facilitate the emission of sound. A mount is attached to the sound bar to secure the bar to a structure while allowing the bar to pivot along its longitudinal axis. Preferably, the mount is secured to the center hub of the grill.

Abstract: A piezoelectric sound-generating component case that includes a case body for housing a vibrating plate and insert terminals that are provided in the case body for applying a voltage to the vibrating plate. The case body includes a bottom or base and a side wall that projects from the peripheral edge of the bottom. The case body is provided with an opening that opens on the leading end side, in the projection direction, of the side wall. The side wall has thick parts at least on the sides where the insert terminals are provided. In a plan view of the case body, the transverse direction width of the thick parts of the side wall is larger than the transverse direction width of the parts of the side wall that are adjacent to the thick parts.

Abstract: The present disclosure provides a detection system and a detection method. The microphone of the detection system receives the response signal formed according to the shape of the sealed cavity. The conversion unit transfers the response signal in the time domain to the frequency domain signal in the frequency domain. The calculation unit obtains every frequency value corresponding to the frequency gradient being zero of each frequency waveform which is chosen of the response signal. The average unit averages every frequency value corresponding to the frequency gradient being zero of each chosen frequency waveform into the average frequency value and outputs an average frequency value. The determination unit determines whether the average frequency value is located in the corresponding frequency tolerance range, so that the wearing status of the in-ear earphone is confirmed.

Abstract: Disclosed is an open ear headphone, including a housing, a speaker arranged in an accommodating space inside the housing to define the accommodating space into a front cavity and a rear cavity, a connecting member including opposite first and second ends, and a supporting member connected to the second end and including a supporting portion and a sound outlet channel. A sound outlet is provided on a surface of the housing and is in acoustic communication with the front cavity. The first end is connected to the surface of the housing. When a user wears the open ear headphone, the housing is located in a concha cavity of the user's ear, the supporting portion at least leans against a lower edge of the concha cavity, and the sound outlet channel is in acoustic communication with the user's ear canal and is not in contact with the user's ear.

Abstract: Disclosed is an earphone, which includes a housing defined with a first sound hole, a second sound hole, and a resonant cavity communicating the first sound hole and the second sound hole inside the housing; and a loudspeaker in the resonant cavity, having a first sound emitting surface corresponding to the first sound hole, and a second sound emitting surface facing the first sound emitting surface, where sound emitted from the second sound emitting surface pass to the second sound hole through the resonant cavity.

Abstract: A three-dimensional earpiece production system for additive manufacturing of a three-dimensional earpieces based on scanned images of an ear which conformably engage the outer ear of a wearer.

Abstract: The present invention provides a headset with a waterproof structure having an external appearance formed by a front housing having a cap shape and a rear housing that decreases in volume as it goes down and is formed with a sound emitting part at an outlet, the headset comprising: the front housing coupled to the rear housing in an inclined state to one side with respect to a horizontal line; the rear housing accommodating a bracket in an upper portion thereof; the bracket including a first long sidewall and a second short sidewall that extend to boundaries of the front and rear housing, respectively, and a sealing member mounted at a boundary portion between the front and the rear housing and the bracket, wherein the sealing member is made of a flexible plastic resin or a silicone material, with elasticity.

Abstract: A length of a band part is easily adjusted with the same length regardless of the number of adjustments. There are provided an information output unit that outputs information, a band part whose length is adjustable, and a slide part that is movable with respect to the band part in a length direction of the band part. The slide part is attached with a holding magnet, the band part supports a positioning magnet that attracts the holding magnet in a state where the length of the band part is adjusted, and the positioning magnet is made movable with respect to the band part in a length direction.

Abstract: A method is a described for constructing a hearing aid shell that comprises a combination of hard and soft materials. In one embodiment, 3D printing is combined with conventional mold/casting methods so that a first shell portion made of a hard material and a mold for a second shell portion are 3D printed. The mold is then filled with a soft material which is allowed to set to form the second shell portion, and the first and second shell portions are adhesively attached.