231results about "Ceramic diaphragms" patented technology

The present disclosure provides an earphone comprising a sound production component and an ear hook. In a wearing state, the ear hook is configured to place the sound production component at a position near an ear canal but not blocking the ear canal. An inner contour of the ear hook's projection on a user's sagittal plane includes a first curve having an extremum point in a first direction. The first direction is perpendicular to a long-axis direction of a projection of the sound production component on the sagittal plane. The extremum point is located behind a projection point of an upper vertex of the ear hook on the sagittal plane, and the upper vertex is a highest point of an inner contour of the ear hook along the user's vertical axis. An inclination angle of the long-axis direction relative to a horizontal direction is within a range of 13°-21°.

An exciter-equipped glass diaphragm, includes: a glass plate structure; and a first exciter and a second exciter, which are attached to the glass plate structure, in which, when a lowest resonant frequency of the first exciter is F1(0) (Hz), and a lowest resonant frequency of the second exciter is F2(0) (Hz), the exciter-equipped glass diaphragm satisfies: 3≤|F1(0)−F2(0)|≤100 (Hz).

The present invention relates to a glass diaphragm comprising: a glass plate structure; a mounting part which is fixed to the glass plate forming body and on which a vibrator that vibrates the glass plate forming body is mounted; and an adhesive layer in contact with the glass plate structure and the mounting portion, the adhesive layer having a first adhesive layer and a second adhesive layer made of different materials, the shear storage elastic modulus of the first adhesive layer at-40 DEG C being 1.0 * 107 Pa or less, and the shear peel strength of the second adhesive layer at 80 DEG C being 0.2 MPa or more.

A speaker assembly is disclosed. The speaker assembly includes: a supporter that is elongated; an upper basket adjacent to one end of the supporter and coupled to the supporter; a lower basket adjacent to the other end of the supporter and coupled to the supporter; and a diaphragm disposed at an outside of the supporter between the upper basket and the lower basket, wherein one end and the other end of the diaphragm are coupled to the upper basket and the lower basket, respectively, so as to vibrate in a longitudinal direction of the supporter.

This invention unveils an optical microphone utilizing diamond cantilevers and its associated acoustic sensing system. The core component is a diamond cantilever, featuring a diamond diaphragm with a centrally located U-shaped groove. The manufacturing process involves several key steps: initially preparing the diamond diaphragm using silicon in a chemical vapor deposition setup, where methane and hydrogen are reacted under specific temperature and pressure conditions to form a diamond polycrystalline film on the silicon. This film is then separated from the substrate to create the diaphragm. Subsequently, a U-shaped groove is crafted on the diaphragm by applying a dry etching template and etching, resulting in the formation of the diamond cantilever, with a thickness ranging from 10 to 100 μm. This method establishes a novel approach to creating sensitive and durable optical microphones.

There is a composite material for an acoustic transducer diaphragm comprising: a thermoplastic polymer resin, a graphitic filler, and optionally a coupling agent. The thermoplastic polymer resin is selected from the group consisting of polypropylene, polyethylene, poly(methyl methacrylate), polycarbonate, polyoxymethylene, cyclic olefin copolymer, polyethylene terephthalate, acrylonitrile butadiene styrene, polybutylene terephthalate, polyamide, poly(ADP-ribose) polymerase, polyethylenimine, polyamide-imide, polyether ether ketone, polyolefin, polyester, polycarbonate, polysulfone, polyacetals, polyvinyl acetals, polyketone, polyamides, cyclic olefin copolymer, thermoplastic thermotropic liquid-crystal polymer, polyphenylene sulfide, polyimide and a mixture thereof. The graphitic filler is selected from the group consisting of graphene oxide, reduced graphene oxide, graphite, graphene and carbon nanotubes, and a mixture thereof. The coupling agent or a mixture is selected from the group consisting of titanium organometallics, aluminum organometallics, zirconium organometallics, and silicon organometallics.

The present invention discloses a diaphragm for a speaker including a lower surface area, a central area formed on said lower surface area, an upper surface area formed on said central area. The upper surface area, the central area and the lower surface area includes homogeneous amorphous materials. The diaphragm includes internal stress changing with a depth from the surface to the center of the diaphragm.

Disclosed is an open earphone, comprising a sound production component and an ear hook. The ear hook may include a first portion and a second portion connected in sequence. The first portion may be hung between the auricle of a user and the head of the user, the second portion may extend toward a front outer side of the auricle and connect the sound production component, and the sound production component may be located close to the ear canal but not block the opening of the ear canal; wherein the sound production component and the auricle may have a first projection and a second projection on a sagittal plane, respectively, 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 within a range of 0.25-0.6, the centroid of the first projection may have a second distance from an end point of the second projection in a sagittal axis direction, and a ratio of the second distance to a width of the second projection in the sagittal axis direction may be within a range of 0.4-0.7.

A microelectromechanical device for capacitive fluid pressure measurement. The device has a first membrane and a second membrane which can be elastically deflected by a fluid pressure, wherein a cavity is formed between the first membrane and the second membrane, in which cavity a counter electrode is arranged, wherein the counter electrode has a plurality of radial etch channels which extend radially from the center of the counter electrode to an edge of the counter electrode. A microelectromechanical microphone, and a method for producing a microelectromechanical device, are also described.

Disclosed herein is a method of controlling, by a voice guidance control device according to some embodiments of the present disclosure, a volume level of personalized voice guidance. The method includes: obtaining information on a distance between an occupant of a vehicle and a seat of the vehicle from a signal generated from the vehicle; and outputting voice guidance related to the occupant. A volume level of the voice guidance is adaptively determined based on the information on the distance between the occupant and the seat.

The present disclosure provides an open earphone comprising: a sound production component including a transducer and a housing accommodating the transducer and an ear hook. In a wearing state, a portion of the ear hook is hung between an auricle and a user's head, and the other portion of the ear hook extends towards a side of the auricle away from the head and connects to the sound production component to place the sound production component in a position near an ear canal but not blocking the ear canal. The housing is provided with a sound outlet on an inner side surface towards the auricle for guiding a sound generated by the transducer out of the housing and to the ear canal, and a ratio of an area of the sound outlet to an area of the inner side surface is between 0.015 and 0.25.

The present disclosure provides an earphone including a sound production component, an ear hook, and a microphone assembly. The microphone assembly includes a first microphone and a second microphone. The sound production component or ear hook includes a first sound hole and a second sound hole corresponding to the first microphone and second microphone, respectively. An extension line of a line connecting a projection of the first sound hole on a sagittal plane of the user and a projection of the second sound hole on the sagittal plane has an intersection point with a projection of an antihelix, a ratio of a first distance between the projection of the first sound hole on the sagittal plane and the projection of the second acoustic hole on the sagittal plane to a second distance between the projection of the second acoustic hole on the sagittal plane and the intersection point is 1.8-4.4.

Provided in the present application are an reinforced dome and a loudspeaker. Preparation raw materials for the reinforced dome comprise a main material and an reinforced material added to the main material, the particle size of the reinforced material being 1 nm-5 μm, and the mass percentage of the reinforced material added to the preparation raw materials being 1-50%. The reinforced dome of the present application comprises the main material and the reinforced material added to the main material. The reinforced material is added to the main material so as to enhance the mechanical properties of the dome, such that compared with those of domes in the prior art made of pure polymer materials or metal materials, the elastic modulus of the reinforced dome obtained in the present application is increased while the quality requirements of the dome is ensured, thus improving the high-frequency performance of loudspeaker products.

The present invention relates to an electronic device. A display device includes: a display module including a display panel configured to display an image; a rear cover located on a rear surface of the display module; and a sound generation module located at the rear cover and configured to vibrate the display module to generate sound, and a rear surface of the sound generation module is covered by the rear cover.

A glass-diaphragm-equipped vehicle body structure includes a glass diaphragm including a window glass that closes an opening portion of a vehicle body, a resin layer attached to a peripheral edge of a surface of the window glass on a vehicle interior side, and an exciter attached to the surface of the window glass on the vehicle interior side. Then, a lowest resonance frequency obtained based on a spring constant of the resin layer, a spring constant of the exciter, and a mass of the exciter is 200 [Hz] or less.

The present disclosure provides a conductive diaphragm and a speaker using same. The conductive diaphragm includes a main portion made of polymer material and a conductive portion located on the main portion. The conductive portion includes a substrate with a film layer and conductive material dispersed in the substrate, the film layer is solidified from at least one material of thermoplastic elastomer, phenyl silicone, isoprene rubber, or fluoroelastomer. Compared with the related technologies, the conductive diaphragm disclosed by the present disclosure has excellent atigue-resistant property and could maintain good adhesive strength and toughness.

The present disclosure provides an open earphone, including: a sound production component including: a transducer including a diaphragm configured to generate a sound; and a housing forming a cavity used to accommodate the transducer, wherein in a wearing state, the housing is provided with a sound guiding hole on an inner side surface toward an auricle of a user for guiding a sound generated by a front side of the diaphragm out of the housing and into an ear canal, and at least two pressure relief holes are provided on one or more other side surfaces of the housing, the at least two pressure relief holes including a first pressure relief hole away from the ear canal and a second pressure relief hole near the ear canal, and a sound pressure at the first pressure relief hole being greater than a sound pressure at the second pressure relief hole.

An apparatus, comprising a film (103) comprising a network of conductive and / or semi-conductive high aspect ratio molecular structures is presented. The apparatus also comprises a frame (102) arranged to support the film (103) at least at least two support positions so that a free-standing region (101) of the film (103) extends between the at least two support positions. The two or more electrical contact areas electrically coupled to the film (103), and these electrical contact areas are arranged to pass electric charge across the free- standing region (101) of the film (103) at a current between 0.01 and 10 amperes.

A method and apparatus for maintaining a free-standing region of a film including a network of High Aspect Ratio Molecular structures (HARM-structures). The method includes electrically coupling the film to two or more electrodes at two or more peripheral locations of the film and passing electric charge across the free-standing region of the film to create a magnetic attraction between the HARM-structures in the network.

The invention relates to a vibrating diaphragm suitable for a loudspeaker. The vibrating diaphragm sequentially comprises an upper surface area, a lower surface area and an upper surface area from top to bottom, a central region; and a lower surface region; wherein the upper surface area, the central area and the lower surface area are all made of homogeneous amorphous materials, and the homogeneous amorphous materials comprise silicon dioxide; and the vibrating diaphragm is made of a hard homogeneous amorphous material with internal stress change, and the stress change is changed along with the depth from the surface to the center of the vibrating diaphragm.

The invention discloses an electric micro-electro-mechanical system (MEMS) loudspeaker, which is provided with a pair of stators and a diaphragm arranged between the stators, and is used for generating an acoustic output according to an input electro-acoustic signal. The moving part is related to the performance of the electric MEMS loudspeaker due to the symmetrical structure of the thin conductor connecting part and the rigid polyimide membrane suspended on the diagonal spring structure, and the structure is uniformly distributed on the elastic membrane. In addition, by means of the structure, the frequency bandwidth is improved, and the broadband is large. The multi-circle planar micro-coil structure is manufactured at the top and / or the bottom of the diaphragm, and a single layer or double layers can be used, so that the efficiency of the MEMS loudspeaker is improved.

The embodiment of the invention relates to the technical field of microphones, and discloses a vibrating diaphragm and an MEMS microphone. The vibrating diaphragm comprises a vibrating part and a connecting part arranged around the vibrating part. The vibration part comprises a first flat part located at the middle position, a corrugated part arranged around the first flat part and a second flat part arranged around the corrugated part. The corrugated portion extends in a direction from a center to an edge of the first flat portion. The flexural rigidity of the corrugated part is greater than that of the first flat part and that of the second flat part, and the corrugated part is made of a material at least comprising silicon nitride. According to the vibrating diaphragm and the MEMS microphone provided by the embodiment of the invention, the structural strength of the vibrating diaphragm can be improved.

The invention relates to a microelectromechanical device (1) for capacitive fluid pressure measurement, comprising a first membrane (2) and a second membrane (3) which can be elastically deflected by the fluid pressure, a hollow space (4) being formed between the first membrane (2) and the second membrane (3), a counter electrode (5) is arranged in the hollow space, the counter electrode (5) is provided with a plurality of radial etching channels (10), and the etching channels extend from a counter electrode center (5b) to a counter electrode edge (5a) in the radial direction. The invention further relates to a microelectromechanical microphone and to a method for producing a microelectromechanical device (1).

Provided herein are high-fidelity, free-standing, wireless, glass speaker systems with a curved glass that is wide at the base and narrow on top, the width being gradually reduced all the way to the top, and having three slots at the top to reduce the mass of the glass. The shape of the glass is configured to create a dynamic range of sound, to allow low frequencies to resonate more prominently at the bottom, and high frequencies to be more prominent at the top of the glass, and the mid frequencies to resonate more prominently in the middle section of the glass.

The present invention relates to an acoustic membrane (14a) for an acoustic transducer, the membrane comprising a substrate (21); and at least one reinforcement layer (23a-23b) of the substrate (21), the at least one reinforcement layer (23a-23b) enabling to improve the stiffness of the membrane (14a). The reinforcement layer (23a-23b) of the substrate (21) corresponds to an amorphous carbon layer belonging to the DLC family and has a stiffness greater than 300 GPa, a density lower than 3400 kg / m 3 and a thickness between 0.5 pm and 6 pm. The reinforcement layer (23a-23b) is attached to the substrate (21) with a bonding layer (22a-22b) having a thickness between 0.1 pm and 1 pm and comprising at least one metallic compound.

The glass diaphragm module includes: a glass diaphragm including a glass plate structure and an exciter that is attached to the glass plate structure; a first member that is attached to a peripheral end portion of the glass diaphragm via a resin layer; and a second member that is arranged away from the glass diaphragm and that is connected to the first member, and a Young's modulus E1 of the first member and a Young's modulus E2 of the second member satisfy E2 / E1≥10.

A glass membrane comprises: a glass plate structure; a mounting element attached to the glass plate structure; a connecting element attached to the mounting element and to be attached to an exciter to cause the glass plate structure to vibrate; and a first adhesive layer and a second adhesive layer, each of which is arranged between the glass plate structure and the mounting element, wherein a material of the first adhesive layer is different from a material of the second adhesive layer.

Embodiments of the present disclosure provide a speaker. The speaker may include a diaphragm; a magnetic circuit component; and a coil connected to the diaphragm, at least part of the coil being arranged in a magnetic gap formed by the magnetic circuit component, and the coil driving the diaphragm to vibrate to generate sound after the coil being energized. The diaphragm may include a main-body region and a folded-ring region surrounding the main-body region, the main-body region may include a first inclined section and a first connecting section connected to the coil, the first inclined section may be attached to a portion of the folded-ring region, and the first inclined section may be tilted in a direction away from the coil with respect to the first connecting section.

Disclosed is an open earphone, comprising a sound production component and an ear hook. The ear hook may include a first portion and a second portion connected in sequence. The first portion may be hung between the auricle of a user and the head of the user, the second portion may extend toward a front outer side of the auricle and connect the sound production component, and the sound production component may be located close to the ear canal but not block the opening of the ear canal; wherein the sound production component and the auricle may have a first projection and a second projection on a sagittal plane, respectively, 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 within a range of 0.25-0.6, the centroid of the first projection may have a second distance from an end point of the second projection in a sagittal axis direction, and a ratio of the second distance to a width of the second projection in the sagittal axis direction may be within a range of 0.4-0.7.