252results about "Diaphragm construction" patented technology

A sound apparatus for a vehicle can include an enclosure having an internal space and a sound generating module disposed at the internal space, and a fixing part configured at the enclosure. The fixing part can be fixed to a supporting part at a vehicle structure.

A sound apparatus can include a sound generating module, an enclosure at a rear surface of the sound generating module with an internal space therebetween, and a protection member at the sound generating module. The sound generating module can include a vibration member and a vibration apparatus configured at the vibration member.

A sound control system includes a sound generating device disposed at a vehicle ceiling corresponding to a seat region of the vehicle and at a sound space formed within the vehicle to correspond to the seat region, and a sound processing circuit for providing a vibration driving signal to the sound generating device. The sound generating device vibrates an interior material of the vehicle ceiling based on the vibration driving signal.

A sound apparatus includes a vibration member having a plate shape, and a plurality of vibration devices disposed at a surface of the vibration member to vibrate based on a driving signal input thereto, each of the plurality of vibration devices may have a rectangular shape and may be disposed to be rotation-symmetric, and a short side of one of the plurality of vibration devices may be opposite to a long side of another vibration device.

A sound apparatus in one example includes a sound generating module having a vibration member and a vibration apparatus configured in the vibration member, an enclosure disposed in the sound generating module with an internal space therebetween, a coupling member between the enclosure and the vibration member, and a connection member connected to the enclosure. The connection member includes a material different from a material of the coupling member.

To provide a sound apparatus which can enhance a sound characteristic and / or a sound pressure characteristic, and transportation equipment including such a sound apparatus.SOLUTION: A sound apparatus 30 according to one or more embodiments of the present specification includes: a sound generating module 330 including a vibration member 331 and a vibration apparatus 333 configured at the vibration member; an enclosure 310 connected to the vibration member with an internal space therebetween; and a connection member 380 connected to the enclosure. The connection member includes a first portion and a second portion having different thicknesses from each other. The second portion is a periphery portion of the enclosure, and a portion or region between an interior material 130 and the periphery portion of the enclosure. The first portion is the other portion, except the periphery portion, of the enclosure, and includes an opening hole 380o connected to the internal space 313 of the enclosure. The thickness T1+T2 of the second portion is thicker than the thickness T1 of the first portion.SELECTED DRAWING: Figure 43

To provide a film for acoustic component that can be peeled off without tearing from the release film when the release film is peeled off before molding, while maintaining high shape retention before molding and high formability and mold-following property during molding.SOLUTION: A film for acoustic component is curable and has the following (a) viscoelastic properties. (a) Storage modulus E' at a measurement temperature of 20°C and a frequency of 10 Hz is between 0.1 MPa and 500 MPa.SELECTED DRAWING: None

Rubber diaphragm, sound device and application thereof are provided; rubber diaphragm includes distortion improving agent with mass percentage of 0.5-50%; distortion improving agent is random linear polymer with more than two monomer components randomly arranged on main chain, and distortion performance is synergistically regulated by monomer components; end group and / or side group and side chain of distortion improving agent includes special chemical reaction crosslinking points with mass percentage of 0.01-20, and number average molecular weight of distortion improving agent is 500-1200000; and distortion improving agent or main chain thereof is prepared by one-step method. Rubber diaphragm includes distortion improving agent, which is random linear polymer that components are randomly arranged on main chain. Sound device of rubber diaphragm is used to reduce distortion of low-frequency band obviously while maintaining good frequency response characteristics; and preparation method of distortion improving agent is simple, low in cost and has wide application.

A transducer assembly comprising: a laterally offset arrangement of different size transducers, the different size transducers comprising at least a first transducer having a diaphragm of a first size arranged in a first direction and a pair of transducers each having a diaphragm of a second size arranged in a second direction to output sound when driven by respective audio signals, and wherein a force produced by the first transducer is cancelled by a sum of forces produced by the pair of transducers when the transduces are driven by the audio signals.

A speaker includes a housing including a front housing provided in a conductive material; a driver including a diaphragm; a magnetic circuit including a permanent magnet; and an electric circuit including a voice coil to which current is applied based on an input electrical signal, and a first electric circuit configured to vibrate the driver based on the voice coil and a magnetic field formed by the magnetic circuit; wherein the diaphragm include a coating that is surface-coated with a conductive material so as to have a capacitance with the front housing.

An MEMS microphone includes a substrate with a back cavity and a capacitor system arranged on the substrate. The capacitor system includes a back plate and a diaphragm opposite to and spaced apart from the back plate. Surface of the back plate facing diaphragm or surface of diaphragm facing the back plate being provided with an anti-adhesion member. When the diaphragm moves until the anti-adhesion member is in contact with the diaphragm and the back plate at the same time, the anti-adhesion member is elastically deformable along a vibrating direction of the diaphragm. The anti-adhesion member of the present disclosure is elastic and may provide cushioning for movement of the diaphragm, which prevents rapid concentration of stress at a position of the diaphragm in contact with the anti-adhesion member, thereby preventing formation of pits in the diaphragm and preventing breakage of the diaphragm under repeated impact of the anti-adhesion member.

The invention discloses a nonlinear acoustic transducer control method and system based on an Aubry-Mather set, and belongs to the technical field of acoustic transducers. The method comprises the following steps: firstly, based on an Aubry-Mather set theory, constructing a nonlinear vibration model used for describing nonlinear vibration of a transducer diaphragm; secondly, based on a nonlinear vibration model, regional piezoelectric driving and dynamic phase regulation are carried out to simulate a quasi-periodic fluctuation mode; then, on the basis of fluctuation characteristics disclosed by the nonlinear vibration model, a multi-diaphragm collaborative vibration system is constructed, and quasi-periodic superposition of sound waves is realized by optimizing diaphragm space layout; and finally, based on stiffness parameters in the nonlinear vibration model, integrating a micro electro mechanical system (MEMS) process and a nonlinear material, and realizing equivalent nonlinear stiffness on a physical device through gradient polarization design. The dynamic adaptability, the energy transfer efficiency and the high-frequency output performance of the transducer in a broadband range are effectively improved, and the transducer is particularly suitable for ultrasonic imaging and other high-frequency acoustic application scenes.

The present application discloses an audio device. The audio device comprises a sound producing portion, and the sound producing portion comprises a shell and at least one loudspeaker unit; the loudspeaker unit comprises at least one diaphragm; a first cavity is formed between a vibration outer surface of the diaphragm and the inner wall of the shell; a second cavity is formed between the rear side of the loudspeaker unit and the shell; the first cavity is provided with a first sound outlet hole and a second sound outlet hole; the second cavity is provided with a third sound outlet hole and a fourth sound outlet hole; a line connecting the center positions of projections of the first sound outlet hole, the second sound outlet hole, the third sound outlet hole, and the fourth sound outlet hole on a plane perpendicular to the vibration direction of the diaphragm forms a quadrilateral. The technical solution of the present application achieves better attenuation for medium- and low- frequency bands, especially medium-frequency bands sensitive to human ears, by means of a multi-pole sound source, and can effectively prevent sound leakage when applied to non-in-ear audio devices, thereby improving user privacy.

The present invention relates to an acoustic transducer and a microphone assembly, and more particularly to an acoustic transducer having a low pressure region and a diaphragm having a pressure sensor. An acoustic transducer for generating an electrical signal in response to an acoustic signal is disclosed. In some embodiments, the acoustic transducer includes an at least partially vacuum-sealed chamber, the chamber being partially defined by a first diaphragm. The acoustic transducer also includes a back plate at least partially disposed within the chamber. The pressure of the chamber is below atmospheric pressure. The acoustic transducer also includes a pressure sensor coupled to the back plate and configured to sense the pressure in the chamber.

The present invention provides a piezoelectric speaker and a vibration module for a panel speaker including a piezoelectric speaker and a vibration module for a panel speaker including one speaker unit being configured by including a diaphragm, and at least 3 piezoelectric resonators each being independently configured and attached to one surface of the diaphragm. As described above, according to the present invention, the acoustic properties of a piezoelectric speaker having the advantages of a thin speaker may be enhanced. Most particularly, the present invention may provide a piezoelectric speaker that is required in panel speakers of large-sized TVs, mobile devices, and so on, that can generate sufficient sound pressure and produce stable bass sound (or low frequency sound) at the same time, by resolving the disadvantages of insufficient sound pressure properties in the low frequency band, and by enhancing the smoothness of the sound pressure level (SPL).

To provide a prepreg which enables manufacture of a laminated type diaphragm without using an adhesive, and a diaphragm using the prepreg.SOLUTION: A prepreg has a carbon fiber and an impregnation resin, where the impregnation resin is a thermoplastic resin containing acid-modified polypropylene. A diaphragm 3 can be manufactured by laminating a prepreg 2 on at least one surface of a foam 1.SELECTED DRAWING: Figure 1

The present application belongs to the technical field of electroacoustic transducers for headphones. Provided is an annular dual-suspension quad-magnet planar magnetic driver for an in-ear headphone. The annular dual-suspension quad-magnet planar magnetic driver comprises an upper driver cap, an upper driver magnetic circuit, a rigid thin piece, a dual-suspension diaphragm, an electrically conductive voice coil, an annular bracket, a lower driver magnetic circuit, a pole plate and a lower driver cap, wherein the upper driver cap, the upper driver magnetic circuit, the rigid thin piece, the dual-suspension diaphragm, the electrically conductive voice coil, the annular bracket, the lower driver magnetic circuit and the pole plate are sequentially stacked and assembled together. The present application has the advantages of small size, high sensitivity and high output sound pressure level.

A sound-generating device according to one or more embodiments of the present disclosure can include a sound-generating module comprising a vibrating element and a vibrating device configured at the vibrating element, an enclosure connected to the vibrating element with an interior space between them, and a connecting element connected to the enclosure. The connecting element can comprise a first section and a second section. The first and second sections of the connecting element can have different thicknesses.

A rubber sound film, and a sound production device and a use thereof. The rubber sound film contains 0.2-60% by mass of a distortion improver. The distortion improver is a block polymer, and an end group or at least one block component of the distortion improver comprises 0.02-25% by mass of a special chemical crosslinking site at which a chemical reaction can occur. The number average molecular weight of each block of the distortion improver is from 300 to 100,000. The distortion improver can be accurately prepared by means of living polymerization or the main body structure can be accurately prepared by means of living polymerization. The rubber sound film contains the distortion improver, and the structure and the content of the special chemical crosslinking site of the distortion improver are accurately controllable, so that the position, height, and width of a damping peak thereof are accurately controllable, and the damping characteristics of the obtained rubber sound film are accurately controllable. When the rubber sound film is applied to the sound production device, the distortion in a low-frequency band can be accurately reduced while good frequency response characteristics are maintained, and the rubber sound film has high controllability, stable performance, and extremely board application range.

A display device is disclosed. An object of the present disclosure is to match reproduction frequency bands of sounds output from a plurality of speakers. Another object of the present disclosure is to match magnitudes of sounds output from a plurality of speakers. According to at least one aspect of the present disclosure, the present disclosure can match reproduction frequency bands of sounds output from a plurality of speakers. According to at least one aspect of the present disclosure, the present disclosure can match magnitudes of sounds output from a plurality of speakers.

Provided is a fabric which, when used as a fabric for adjusting the back pressure of a speaker, an earphone, or the like, effectively prevents leakage of sound to the outside and intrusion of external noise, and which has little variation in acoustic characteristics. A woven fabric comprising warp yarns and weft yarns, the woven fabric being characterized in that the air permeability resistance is 0.3 kPa.s / m or more and 5 kPa.s / m or less, and the tolerance of the air permeability resistance of the woven fabric is within + / -10%. Furthermore, the fabric is characterized in that at least one of the warp yarn and the weft yarn is a multifilament yarn. Furthermore, the woven fabric is characterized in that the multifilament yarn is an untwisted yarn which is not twisted.

A vibrating device may include a vibrating member and a vibrating element configured to vibrate the vibrating member and including a vibrating portion. The vibrating portion includes a piezoelectric material and an electrostrictive material. The electrostrictive material includes materials represented by the following Chemical Formula 1 and Chemical Formula 2, and the piezoelectric material includes materials represented by the following Chemical Formula 3 and Chemical Formula 4. [Chemical Formula 1] (PbA-BCB) (Mg1 / 3Nb2 / 3) aO3 [Chemical Formula 2] (PbA-BCB) (D1 / 3E2 / 3) bO3 [Chemical Formula 3] (PbA-BCB) (Zrc) O3 [Chemical Formula 4] (PbA-BCB) (Tid) O3, in Chemical Formula 1 to Chemical Formula 4, "C" is one of calcium (Ca), strontium (Sr) and barium (Ba), "D" is one of nickel (Ni), manganese (Mn), magnesium (Mg) and cobalt (Co), "E" is niobium (Nb) or tantalum (Ta), in Chemical Formula 1 to Chemical Formula 4, "a + b + c + d" is equal to 1, and the ratio of "a + b" to "c +

An MEMS microphone, comprising: a substrate provided with a back cavity (11) and a capacitance system arranged on the substrate. The capacitance system comprises a back plate (2) and a diaphragm (3) arranged opposite and spaced apart from the back plate (2), wherein the surface of the back plate (2) facing the diaphragm (3) or the surface of the diaphragm (3) facing the back plate (2) is provided with dimples (4), characterized in that when the diaphragm (3) moves to enable the dimples (4) to simultaneously come into contact with the diaphragm (3) and the back plate (2), the dimples (4) can elastically deform in the vibration direction of the diaphragm (3). The dimples (4) of the MEMS microphone have elasticity, which can provide a buffer for the movement of the diaphragm (3), and thus avoids rapid concentration of stress on the position where the diaphragm (3) is in contact with the dimples (4), thereby preventing pits from forming on the diaphragm (3) and preventing the diaphragm (3) from breaking under the repeated impact of the dimples (4).

An attenuator is disclosed that enables a microphone's relatively undistorted pick up of a voice that is generated in close proximity to the microphone. This attenuator is a key component of a groundbreaking assistive device or handset / headset that empowers individuals with speech impairments to effectively communicate and reintegrate into society. By leveraging advanced acoustic hardware, intelligent voice algorithms, and a comprehensive image-or-vocabulary-to-impaired-voice database, the handset / headset facilitates understanding the user's impaired speech by harvesting understood terminology and outputting the same in a communicative context. Thus, the handset / headset enables seamless public interaction, independence, and improved quality of life to the user with speech impediments and ensures equal participation and inclusion in everyday verbal interactions.

Disclosed are a composite piezoelectric element and an electronic device having the composite piezoelectric element, wherein the composite piezoelectric element includes an insulating film and a piezoelectric body arranged alternately, wherein the piezoelectric body can be classified as a general piezoelectric body and a finger scan recognition piezoelectric body, the general piezoelectric body is used as at least one of a tactile actuator, a speaker actuator, and an earpiece actuator, and the finger scan recognition piezoelectric body is used for finger scan recognition.

An audio transducer assembly and an apparatus incorporating the same are disclosed. The assembly includes an audio transducer, comprising a diaphragm and a transducing mechanism, which is substantially encapsulated by a metallic enclosure. The enclosure is an integrally formed unit that provides structural reinforcement to a host apparatus, such as a slender housing of a wearable device. To ensure a durable interface, the enclosure may feature a profiled edge region that facilitates a stress-reducing junction with the housing. In some embodiments, the transducer is an armature-type transducer where the diaphragm is rigidly coupled to a pivoting armature. Apertures in the enclosure provide an acoustic pathway from the diaphragm to an exterior of the housing, allowing the assembly to function as a loudspeaker or a microphone.

A rear bowl is forwards connected with a large cylinder, a gap at the bottom of the large cylinder supports a middle cylinder, U iron is installed in the rear bowl in a supporting mode, magnetic steel and a pole plate are positioned and supported in a step hole of the U iron, a voice diaphragm is arranged above the pole plate, and a phase plug is arranged above the voice diaphragm. The horizontal edge of the periphery of the voice diaphragm is pressed and supported on the upper end face outside the U-iron stepped hole through the phase plug periphery supporting ring, the large cylinder is connected with the upper end face of the phase plug periphery supporting ring in a pressing mode and does not make contact with the upper end face outside the U-iron stepped hole, the portion, above the phase plug, of the bottom of the large cylinder is of a ventilation structure communicated with the interior of the middle cylinder, and an upper opening of the ventilation structure is not an externally-expanded horn mouth. The middle cylinder coaxially covers the ventilation structure in a clearance mode, the center of the inner top wall of the middle cylinder protrudes downwards and is provided with a sound dividing head with an arc-shaped section, and the diameter of the arc-shaped bottom circumference is not smaller than the diameter of an upper opening of the ventilation structure. The ventilation structure on the phase plug is arranged to be a closing-up structure, and the lower convex sound dividing head completely corresponding to the closing-up circumference is matched, so that the requirement of simulating exhaust roars of an oil cylinder of a fuel vehicle through instant high-frequency sound production can be met.