122results about "Plane diaphragms" patented technology

Provided is a speaker, including: a diaphragm structure including first and second diaphragms, the first diaphragm is configured to push air to vibrate to generate initial sound wave, and a signal of which is modulated based on a signal within an audible sound frequency band; and a cover plate structure enclosing with the diaphragm structure to form sound-generating cavity, the cover plate structure has a sound outlet hole connecting the sound-generating cavity with outside, the initial sound wave in the sound-generating cavity is transmitted to the outside through the at least one sound outlet hole to form a sound signal, the second diaphragm and the cover plate structure generate an acoustic environmental impedance used to modulate the initial sound wave to change sound pressure of the sound signal. The speaker can modulate and output a sound signal covering the audible sound frequency band based on the acoustic environmental impedance.

A textile enabling control related to sound output is to be provided. A textile according to the present application is characterized by being formed to include foil of an organic piezoelectric film.

The application discloses a piezoelectric sensing unit, a piezoelectric microphone and a terminal. The piezoelectric sensing unit comprises a base, an auxiliary layer, a center film, a piezoelectric film and a plurality of cantilevers. The base has a cavity extending along a first direction, and the cavity forms a polygonal opening on a first surface of the base, the polygonal opening having adjacent first and second sides. The auxiliary layer is formed on the first surface of the base, and the auxiliary layer comprises a first auxiliary part located in a region adjacent to the first side of the first surface. The cantilevers are connected to the sides of the polygonal opening one by one, and each cantilever comprises a first end part and a second end part, the first end part is connected to the first auxiliary part, and the connection point of the first end part and the first auxiliary part is located on one side of the first auxiliary part close to the second side. The cantilever extends along the extension direction of the second side. The second end part of each cantilever is connected to the center film. In the scheme, the length of the cantilever is relatively long, which is beneficial to improving the signal-to-noise ratio of the piezoelectric microphone.

A heat dissipation module, including vapor chamber and sound-producing device attached and fixed to vapor chamber; vapor chamber includes vapor chamber body having receiving cavity, capillary wick in receiving cavity, and opening on side of vapor chamber body close to sound-producing device; opening connects receiving cavity with outside, sound-producing device is supported by vapor chamber body and fixed to opening to seal opening, and receiving cavity is filled with heat dissipation liquid; sound-producing device includes magnetic circuit unit spaced apart from vapor chamber, and first vibration unit and second vibration unit on opposite sides of magnetic circuit unit. Magnetic circuit unit drives first vibration unit and second vibration unit to vibrate; sound-producing device includes first frame, one end of first frame is fixed to side of magnetic circuit unit close to vapor chamber, and another end of first frame is supported by vapor chamber and arranged around opening.

A system is described that comprises a housing, a flexible printed board circuit, PCB, and a sensor. The flexible PCB has a first surface that is exposed to an environment and a second surface that is opposite the first surface. The flexible PCB is mounted to the housing by a mounting element. At least a portion of the flexible PCB is configured to vibrate when an acoustic wave reaches the first surface. The sensor is arranged on the second surface of the flexible PCB and is configured to measure vibrations of the flexible PCB and to output a corresponding electrical signal.

A MEMS transducer includes a deflectable membrane where the deflectable membrane includes two first layers and a second layer arranged between the two first layers. The two first layers comprise low-stress silicon nitride, and the second layer comprises doped silicon.

The present disclosure provides a vibration component. The vibration component may include: a mass element; and an elastic element, the elastic element including a connection region and a first preprocessing region, wherein the connection region is configured to support the mass element; and a deformation quantity of the first preprocessing region is greater than a deformation quantity of a region of the elastic element other than the first preprocessing region when the mass element vibrates.

The application relates to a dome diaphragm and a loudspeaker, the dome diaphragm comprising a first hard layer, a first epoxy foam film layer and a second hard layer which are sequentially stacked, wherein the first epoxy foam film layer is bonded to the first hard layer and the second hard layer respectively. By replacing the foam film layer in the dome diaphragm in the prior art with the first epoxy foam film layer, the first epoxy foam film layer is bonded to the first hard layer and the second hard layer, the risk of delamination of the dome diaphragm is reduced, and the overall stability and sound quality performance of the dome diaphragm when applied to the loudspeaker are improved.

The present disclosure relates to an acoustic device, including a sound output unit and a suspension structure. In a wearing state, a sound outlet hole is provided on an inner side surface of a housing of the sound output unit, and one or more pressure relief holes are provided on other side surfaces. On a reference plane parallel or tangent to a side surface where an effective vent port of each of the one or more pressure relief hole is located, the effective vent port o has a first projection, and the sound outlet hole has a second projection. The first projection defines a plurality of first feature line segments that are perpendicular to the inner side surface, two endpoints of each of the plurality of first feature line segments are located on a contour of the first projection, and the plurality of first feature line segments are parallel to each other. For each of the plurality of first feature line segments, an endpoint of the two endpoints that is farther from the second projection is defined as a reference point. The plurality of reference points of the plurality of first feature line segments include a first reference point and a second reference point, a distance from the first reference point to the second projection is less than a distance from the second reference point to the second projection, the plurality of first feature line segments include a first sub-line segment and a second sub-line segment, the first sub-line segment passes through the first reference point, the second sub-line segment passes through the second reference point, the first sub-line segment has a first length, the second sub-line segment has a second length, and the first length is less than the second length.

The present disclosure relates to a loudspeaker assembly (100), characterized in that the loudspeaker assembly (100) comprises: a magnetic circuit unit (30) comprising a top plate (36) and defining a magnetic gap (38); a frame unit (20) connected to the magnetic circuit unit (30); and a vibration unit (10) connected to the frame unit (20) and comprising an upper diaphragm (12), a voice coil (14), and a dome (16), the voice coil (14) extending at least partially into the magnetic gap (38), wherein the dome (16) comprises a dome main body (160) and at least two crimped edge portions (162, 164) surrounding the dome main body (160), wherein the dome (16) is affixed to a top side of the voice coil (14) by means of the crimped edge portions (162, 164), such that the top plate (36) of the magnetic circuit unit (30) is disposed in a middle of the voice coil (14) in a height direction (z).

This invention discloses a sound-generating device and an electronic device, relating to the field of electroacoustic transduction technology. The sound-generating device has a magnetic circuit system with a magnetic gap and a through-hole penetrating the magnetic circuit system. A first diaphragm assembly and a second diaphragm assembly of the vibration system are respectively disposed on opposite sides of the magnetic circuit system along a first direction. A voice coil is connected to the first diaphragm assembly and is correspondingly arranged with the magnetic gap. A connector passes through the through-hole, and both ends of the connector are connected to the first diaphragm assembly and the second diaphragm assembly, respectively. The outer connecting part of the diaphragm is connected to the magnetic circuit system, and the inner connecting part is connected to the connector to seal the through-hole. A first rear cavity is formed between the first diaphragm assembly, the magnetic circuit system, and the diaphragm; a first front cavity is formed between the second diaphragm assembly, the magnetic circuit system, and the diaphragm. The sound-generating device also has a sound outlet communicating with the first front cavity. This invention achieves a significant increase in the effective sound-generating area of ​​the loudspeaker without increasing the product size.

Disclosed is a loudspeaker, including: a vibration system; a magnetic circuit system comprising a magnetic basket, a central magnet fixed to the magnetic basket, and a peripheral magnet fixed to the magnetic basket and disposed surrounding the central magnet. Compared with conventional technologies, the obliquely magnetized peripheral magnet can extend the lengths of effective magnetic field lines, equivalent to increasing the thickness of the peripheral magnet; meanwhile, fitting between the central special-shaped magnet and the peripheral special-shaped magnet achieves non-linear BL control; the loudspeaker described herein increases the total magnetic energy product via the special-shaped magnets, which increases the loudspeaker BL and alleviates BL non-linearity.

The earphone includes a sound generation component including a transducer; at least a portion of the sound generation component extending into a concha cavity of a user; and an ear hook including a first portion and a second portion, the second portion being connected to the first portion, and being connected to the sound generation component to place the sound generation component at a position near an ear canal without blocking an opening of the ear canal. The sound generation component has a first projection on a sagittal plane, and the auricle has a second projection on the sagittal plane. A centroid of the first projection may have a first distance from a highest point of the second projection in a vertical axis direction. A ratio of the first distance to a height of the second projection in the vertical axis direction may be in a range of 0.35-0.6.

The present disclosure discloses an acoustic output device. The acoustic output device may include a first acoustic driver including a first diaphragm; a second acoustic driver including a second diaphragm; a control circuit electrically connected with the first acoustic driver and the second acoustic driver respectively, the control circuit provides a first electrical signal for driving a vibration of the first diaphragm, and a second electrical signal for driving a vibration of the second diaphragm, and the control circuit is configured to adjust a phase of the first electrical signal and a phase of the second electrical signal such that, in a first scenario, the phase of the first electrical signal and the phase of the second electrical signal are opposite, and in a second scenario, the phase of the first electrical signal and the phase of the second electrical signal are same.

The utility model relates to diaphragm technical field, concretely is a kind of novel elastic composite flat diaphragm, the flat diaphragm includes support and diaphragm component, hollow hole is opened in the support, the diaphragm component is fixed on support, and hollow hole is completely shielded, the diaphragm component includes elastic membrane layer and the metal layer being arranged on the upper and lower ends of elastic membrane layer, electrically conductive coil is arranged at hollow hole on the metal layer, the both ends of electrically conductive coil are all provided with conducting point, and the conducting point and electrically conductive coil are electrically connected, and the protective layer is provided on the end face of electrically conductive coil away from metal layer. The utility model has simple structure, reasonable in design, diaphragm sound production effect is good, service life is long, and electrically conductive coil resistance adjustable, satisfy the use demand of different products, it is worth promoting and using.

To provide an APG device capable of producing asymmetric air pressure pulses.SOLUTION: An air-pulse generating device includes a film structure including a first flap and a second flap opposite to each other. The film structure is actuated to operate at an ultrasonic frequency, and the air-pulse generating device produces a plurality of air pulses at an ultrasonic pulse rate. The first flap and the second flap are actuated to perform a differential movement to form an opening or a virtual valve. A slit is formed between the first flap and the second flap, and the opening or the virtual valve is formed because of the slit. The slit is formed as a zigzagging pattern on the film structure.SELECTED DRAWING: Figure 1

This invention discloses a sound-generating device, a sound-generating module, and an electronic device, relating to the field of electroacoustic transduction technology. The sound-generating device has two voice coils arranged parallel to each other along a second direction and connected to a first diaphragm assembly. A magnetic circuit system is located between the first and second diaphragm assemblies. The adjacent long axes of the two voice coils correspond to the second magnetic gaps of the magnetic circuit system. The magnetic circuit system also has two through holes penetrating the central magnetic part and the magnetic yoke. Each connector passes through one of the through holes and is connected to the first and second diaphragm assemblies. Each diaphragm is connected to a central magnetic part and a connector to close one through hole. A first rear cavity is formed between the first diaphragm assembly, the magnetic circuit system, and the two diaphragms. A first front cavity is formed between the second diaphragm assembly, the magnetic circuit system, and the two diaphragms. The sound-generating device also has a sound outlet communicating with the first front cavity. This invention achieves a significant increase in the effective sound-generating area of ​​the loudspeaker without increasing the product size.

A loudspeaker device (200) is provided. The loudspeaker device (200) comprises a micro-electromechanical unit (100). The micro-electromechanical unit (100) comprises a diaphragm (10) having a planar extension. The diaphragm (10) comprises a semiconductor structure (20) comprising a first (22) and a second (24) layer, each layer extending in the planar extension. The first layer (22) comprises Al(1-x)Ga(x)N, wherein 0.2≤x≤0.4, and the second layer (24) comprises GaN. The diaphragm (10) is arranged to oscillate in an extension transverse to the planar extension to thereby generate sound waves. A calibrating weight (17) is arranged on a surface of the diaphragm (10). The micro-electromechanical unit (214) further comprises a support structure (30) supporting the diaphragm (10), an electrode arranged (50) on a surface of the diaphragm (10), and a resonant box.

The invention relates to a joining method for producing a sound transducer system, comprising: providing a piezoelectric material (3) and a plurality of components, each of the components being characterised by a solidus temperature; arranging the piezoelectric material (3) and the plurality of components in the form of a stack (10), so that adjacent to a front face of the piezoelectric material (3) there is a front stack part and adjacent to a rear face of the piezoelectric material (3) there is a rear stack part; and consolidating the stack (10) by the introduction of heat and pressure for a predetermined period of time, none of the solidus temperatures of the plurality of components being exceeded during the consolidation; and, during the consolidation, the piezoelectric material (3) being directly acoustically coupled to an immediately adjacent component of the front and / or rear stack part.

To obtain a glass diaphragm that can prevent thermal degradation of the transducer and facilitates the installation of the transducer onto the glass plate structure. [Solution] The glass diaphragm 11 comprises a glass plate structure 12, a mount 22 fixed to one main surface of the glass plate structure 12 via an adhesive layer 20 and housing a vibrator 26 that vibrates the glass plate structure 12, and a cap 24 attached to the mount 22 and holding the vibrator 26 to the mount 22. The mount 22 has an opening 22A that exposes the vibrator 26 to the glass plate structure 12 side, and a heat insulating space 30 is formed between the glass plate structure 12 and the vibrator 26.

A microelectromechanical loudspeaker. The loudspeaker includes: a housing structure; a displacement plate, which is mounted in the housing structure such that it can be deflected along a deflection direction; and an actuator structure, which is connected to the displacement plate for deflecting the displacement plate along the deflection direction, wherein the actuator structure includes at least two actuator planes which are resiliently connected to one another and disposed one above the other in the deflection direction, wherein, on facing plane surfaces, the actuator planes include electrode units, and wherein the electrode units can be activated to move the actuator planes relative to one another along the deflection direction and the displacement plate can be deflected along the deflection direction via the movement of the actuator planes.

A directional sound system includes a base member and at least one pane element secured to the base member. The base member includes a base surface. An exciter is secured to the at least one pane element and includes an exciter surface. An adhesive isolation ring is applied between the at least one pane element and the base member. A predetermined thickness of the adhesive isolation ring creates a gap between the base surface of the base member and the exciter surface. The at least one pane element is positioned on the base surface of the base member. The exciter generates a directional signal when energized.

Aspects of the disclosure relate to microelectromechanical systems (MEMS) devices for pressure measurements. In particular, various examples herein describe techniques for limiting a diaphragm displacement of capacitive MEMS transducers to enable high sound pressure level (SPL) measurements. A reduced diaphragm displacement may be achieved by using a cap over the diaphragm of the MEMS transducer to reduce a volume of a back cavity of a MEMS transducer. A smaller back cavity may acoustically load the diaphragm and reduce the diaphragm displacement. Additionally, or alternatively, a reduced diaphragm displacement may also be achieved by stacking multiple MEMS transducers over each other such that the multiple MEMS transducers are in series acoustically.

The present invention relates to a planar-dynamic acoustic transducer (0) having at least one magnet arrangement (1) having a plurality of magnetic poles and having at least one acoustic aperture (13) and having a diaphragm (2) having at least one conductor track (21), wherein the magnet arrangement (1) has an inner region (11), which includes the magnetic poles, and an edge region (14), which surrounds the inner region (11) and connects the elements thereof to one another, wherein the inner region (11) of the magnet arrangement (1) is arranged in a manner offset from the conductor track (21) of the diaphragm (2) perpendicular to the horizontal (X, Y) and in a manner at least overlapping, preferably congruent, with the conductor track (21) of the diaphragm (2) in the horizontal (X, Y). The planar-dynamic acoustic transducer (0) is characterized in that the edge region (14) of the magnet arrangement (1) furthermore includes at least one mechanical, acoustic and / or electrical function of the planar-dynamic acoustic transducer (0).

Various implementations include miniature loudspeaker drivers. In some aspects, an electro-acoustic driver includes: a cone having a surface area configured to radiate acoustic energy; a suspension coupled to the cone; and a support structure coupled to the suspension and having an outer linear dimension in a plane of the cone of approximately 6.0 millimeters (mm) or less, wherein the surface area of the cone is at least 49% of an overall cross-sectional area of the electro-acoustic driver in the plane of the cone.

A speaker includes a housing, a vibration component, and a magnetic circuit component. The housing has an inner cavity The magnetic circuit component is disposed in the inner cavity The magnetic circuit component has a magnetic gap. The vibration component includes a first diaphragm a second diaphragm and a voice coil. The first diaphragm and the second diaphragm are respectively located on two opposite sides of the magnetic circuit component. Circumferential edges of the first diaphragm and the second diaphragm are connected to the housing. The voice coil is located inside the magnetic gap and two opposite sides of the voice coil are respectively connected to the first diaphragm and the second diaphragm.

Embodiments of the present disclosure provide a sound production component including a diaphragm, a magnetic circuit assembly, a coil, and a housing. The coil is connected to the diaphragm and is at least partially disposed in a magnetic gap formed by the magnetic circuit assembly, and the coil drives the diaphragm to vibrate to produce a sound after being energized. A sound outlet is provided on an inner side surface of the housing for directing a sound generated at a front side of the diaphragm out of the housing. The diaphragm comprises a main body region and a folded-ring region surrounding the main body region, the folded-ring region comprising an arc-shaped segment and a connection segment connected to the main body region. A projection of a center of the sound outlet along a vibration direction on the diaphragm is on an inner side of the arc-shaped segment.