68results about "Diaphragm construction" patented technology

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

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.

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 speaker system with a slantingly disposed and circularly curved reflection chamber includes an enclosure, a speaker driver mountable at the front side of the enclosure, and a housing mountable at the rear side of the enclosure. The front side of the speaker driver forms a reference plane on a coordinate plane defined by a transverse axis and a longitudinal axis. The reflection chamber is formed at the front side of the housing, has a three-dimensional circularly curved configuration, has a portion located in the paths along which the speaker driver's acoustic waves propagate in the enclosure, so as to reflect such acoustic waves, and can be tilted with respect to the transverse axis and / or the longitudinal axis to form a transverse-direction angle and / or a longitudinal-direction angle between the reflection chamber and the reference plane. Accordingly, the asymmetric internal structure suppresses standing waves formation, improving the speaker system's acoustic performances.

An inlay for a component carrier includes a gas-permeable porous layer structure, an upper layer structure, arranged on the gas-permeable porous layer structure, the upper layer structure defining a cavity such that a portion of the gas-permeable porous layer structure is exposed and an upper metal layer structure arranged on the upper layer structure. A component carrier with the inlay and manufacturing methods of the inlay and the component carrier are described.

An integrated passive radiator loudspeaker module and an ultrathin sound equipment, comprising an inner basket, an outer extension basket and a ring-shaped passive radiator; the inner basket is used for mounting a loudspeaker unit; the outer extension basket is concentrically arranged at the periphery of the inner basket and is rigidly connected with the inner basket through a plurality of connecting columns; the ring-shaped passive radiator is arranged between the inner basket and the outer extension basket, an inner R ring of the ring-shaped passive radiator is integrally vulcanized with an R ring on the outer side of the sound cone of the loudspeaker and is fixed to the inner basket, and an outer R ring of the ring-shaped passive radiator is fixed to the outer extension basket; the loudspeaker and the passive radiator are integrated into a module, the mounting process is simplified, the production efficiency and product consistency are improved, and the cabinet is extremely thinned through the outer extension basket structure.

An electronic device according to an embodiment of the present invention may include a housing and an acoustic module disposed inside the housing. The acoustic module may include: a speaker unit including a vibration plate; a speaker housing for accommodating the speaker unit; the porous air adsorption component is arranged in the loudspeaker shell; and an air-permeable damping member disposed inside the speaker housing and stacked with the air-absorbing member.

Provided is a woven fabric that effectively prevents sound leakage to the outside and intrusion of external noise and has little variation in the acoustic property when used as a woven fabric for adjusting the back pressure of a speaker, earphones, and the like. Provided is a woven fabric including a warp thread and a weft thread, the woven fabric having a airflow resistance of 0.3 kPa·s / m or more and 5 kPa·s / m or less, and the woven fabric having a tolerance of the airflow resistance within ±10%. In the woven fabric, at least one of the warp thread and the weft thread is a multifilament thread. In the woven fabric, the multifilament thread is a non-twisted thread without twists.

The application discloses a sound generating device and electronic equipment, and relates to the technical field of electroacoustic transduction. The sound generating device comprises a yoke, a vibration system, a terminal assembly and an inductor assembly. The yoke is provided with a mounting space. The vibration system vibrates along a first direction. The vibration system comprises a diaphragm and a voice coil connected to the diaphragm. The outer periphery of the diaphragm is connected to one end of the yoke. The terminal assembly is arranged on the yoke. One end of the terminal assembly is connected to the lead wire of the voice coil. The other end of the terminal assembly is used for being connected to an external circuit. The inductor assembly is arranged in the mounting space. The inductor assembly is connected in series with the voice coil through the terminal assembly. The axial direction of the inductor assembly is parallel to the first direction. The sound generating device can save product arrangement space and improve the utilization rate of the occupied space.

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

An electric sound stethoscope with double-channel compatible and collection switch relates to the field of medical auscultation, which is configured with double-channel compatible and convenient collection switch, analyzes and compares sound and sound wave pattern functions, and outputs two high-definition loudspeaker work of audio amplifier modules in two ways to connect two audio boxes, which is a new innovation for diagnosing heart and lung diseases. The excellent electric sound quality presents the extremely distinctive creative color of the system. The system includes electronic or traditional auscultation head to collect sound signals, and the sound signals are converted into electric sound signals by a microphone. The auscultation includes collecting heart and lung sound, and independently setting a microphone channel or a microphone wired socket interface with a convenient switch, forming the electric sound signal of the heart and lung auscultation collected by the convenient switch and the auscultation method to suppress howling. The electric sound signal enters the functional module circuit for processing through the appropriate transmission mode, amplifies the electric sound signal to drive the loudspeaker to broadcast and listen to the auscultation.

The at least one single-wafer-type piezoelectric vibrator (130) includes a piezoelectric body (131) facing the first vibrating plate (110) with a gap therebetween, and a second vibrating plate (135) provided on the side of the piezoelectric body (131) opposite the side on which the frame (120) is located. A plurality of openings (110s) are formed in the first diaphragm (110), the openings (110s) opening at both ends in the longitudinal direction of the inside of each of the plurality of frames (120). The first vibrating plate (110) resonates and vibrates in a direction orthogonal to the first vibrating plate (110) at a phase opposite to the phase of the at least one single-chip piezoelectric vibrator (130). The inside dimension of each of the plurality of frame bodies (120) is such that the long-side dimension (L1) in the long-side direction is 4-11 times the short-side dimension (L2) in the short-side direction orthogonal to the long-side direction. In the plurality of frames (120), the short side dimensions (L2) are substantially the same. The difference between the long-side dimensions (L1) of the frame bodies (120) adjacent to each other in the long-side direction among the plurality of frame bodies (120) is equal to or less than the short-side dimension (L2).

A MEMS microphone according to one embodiment of the present invention comprises: a second substrate having an auxiliary pad; a MEMS structure disposed on the second substrate and having a body pad; and a signal processing element spaced apart from the MEMS structure, disposed on the second substrate, and having a signal pad, wherein the auxiliary pad may be in contact with and electrically connected to at least one of the body pad or the signal pad.

An electronic device according to an embodiment of the present invention may comprise a housing and an acoustic module disposed inside the housing. The acoustic module may include: a speaker unit including a vibrating plate; a speaker enclosure for accommodating the speaker unit; a porous air-adsorbing member disposed inside the speaker enclosure; and an air-permeable shock-absorbing member that is disposed inside the speaker enclosure and stacked with the air-adsorbing member.

This application discloses a method for manufacturing a loudspeaker diaphragm, the loudspeaker diaphragm itself, and a loudspeaker. The manufacturing method includes: molding a polymer to form a folded diaphragm substrate; placing the folded diaphragm substrate in a deposition chamber for cathodic arc deposition and thermal evaporation deposition to obtain a vapor-deposited diaphragm; selecting high-modulus carbon fiber prepreg and wet-winding it at a preset angle on a first mold to obtain a carbon fiber voice coil skeleton; bonding the vapor-deposited diaphragm to the carbon fiber voice coil skeleton with high-rigidity adhesive to obtain a diaphragm assembly; performing a frequency sweep test on the diaphragm assembly; adjusting the vibration characteristics of the diaphragm assembly based on the test results until the preset performance requirements are met to obtain a loudspeaker diaphragm assembly. This application significantly improves the performance and stability of the diaphragm assembly through a multi-step synergistic process, overcoming the shortcomings of existing technologies such as insufficient high-frequency vibration stability of the diaphragm, poor coating uniformity, and complex processes.

Microphone having: a first partial microphone with a first diaphragm pair having a first diaphragm and a second diaphragm that are arranged opposite each other; and a second partial microphone with a second diaphragm pair having a third diaphragm and a fourth diaphragm that are arranged opposite each other, wherein the first diaphragm pair is arranged such that the first diaphragm and the second diaphragm are deflectable along a first spatial axis, wherein the second diaphragm pair is arranged such that the third diaphragm and the fourth diaphragm are deflectable along a second spatial axis and wherein the second spatial axis differs from the first spatial axis.

A vibration generating apparatus may include: a microphone apparatus disposed at an object including a plurality of regions, the microphone apparatus being configured to receive noise near the object; a sound processing circuit configured to receive a sound source signal and a noise signal corresponding to the noise, generate a noise removal signal having an antiphase of the noise signal, and generate a vibration driving signal based on the sound source signal and the noise removal signal; and a vibration apparatus disposed at the object to vibrate based on the vibration driving signal to vibrate the object. The noise may be offset and removed by a vibration of the vibration apparatus generated based on the noise removal signal, and a sound source generated by a vibration of the vibration apparatus based on the sound source signal may be received by a user through bone conduction.

To provide a film for prepreg manufacturing that allows the production of laminated diaphragm without using adhesive, and to provide a prepreg and a diaphragm.SOLUTION: Provided is a film for prepreg manufacturing characterized in that at least one of the films 21 and 21 for prepreg manufacturing used for prepreg 2 manufacturing contains polypropylene and antioxidant.SELECTED DRAWING: Figure 2

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

The invention relates to a loudspeaker suspension device (1) comprising: an outer edge (2); an inner edge (3); and a suspension (4) extending between the outer and inner edges. This suspension is capable of absorbing displacement stresses produced on the inner edge by means of a predetermined deformation of the suspension. According to the invention, the suspension comprises at least three distinct parts: a rotating mass (7); a first lip (8) fixed to the end of the inner edge; and a second lip (9) fixed to the end of the outer edge. The first and second lips are also connected to the rotating mass such that the piston-like movements of the diaphragm cause a rotation of the rotating mass of the suspension. Figure for the abstract: Fig. 4

An in-vehicle sound emitting device includes a front case and a rear case. The front case is partitioned from the rear case by a partition plate made from a metal plate. Rear space inside the rear case is sealed, and an electronic circuit is disposed in the rear space. A loudspeaker is mounted in front space inside the front case. By using two of the partition plates having the same structure, the front case having the incorporated loudspeaker and the rear case having the incorporated electronic circuit can be disposed separately.

The present application relates to a vibration generating apparatus and a vehicle including the same. A vibration generating apparatus includes a microphone apparatus disposed at an object including a plurality of regions, the microphone apparatus configured to receive a noise near the object; a sound processing circuit configured to receive a sound source signal and a noise signal corresponding to the noise, to generate a noise removal signal having an opposite phase of the noise signal, and to generate a vibration driving signal based on the sound source signal and the noise removal signal; and a vibration apparatus disposed at the object to vibrate the object based on the vibration driving signal.

The invention relates to a microelectromechanical device (1) for generating pressurized fluid pulses (F) with a substrate (7) and a vibration generator unit (2), the vibration generator unit (2) comprising a functional unit (13) arranged on a front side (7a) of the substrate (7), which has a valve function for temporarily forming a fluid opening (14) and a displacement function for displacing fluid, and a passage channel (5) extending from the functional unit (13) through the substrate (7) to a rear side (7b) of the substrate (7), wherein the vibration generator unit (2) is configured toto generate a pressure oscillation with a predetermined oscillation frequency in the passage channel (5) and to extract a pressure pulse (15a) reflected from the passage channel (5) towards the functional unit (13) through the temporarily formed fluid opening (14) of the functional unit (13) from the passage channel (5) as a pressurized fluid pulse (F). The invention further relates to a microelectromechanical loudspeaker, a microelectromechanical fluid pump device, and a method for operating a microelectromechanical device (1).

The utility model relates to loudspeaker technology field, concretely is a kind of loudspeaker diaphragm, the loudspeaker diaphragm includes pad frame, diaphragm and conducting circuit, wherein pad frame is constituted by frame main body, support frame and connecting portion, the connecting portion is provided with multiple, multiple the connecting portion interval setting between frame main body and support frame, the one end of each connecting portion is connected with frame main body, and the other end is connected with support frame, the conducting circuit is formed on diaphragm using vacuum electroplating process, the diaphragm and pad frame are bonded into an organic whole, the diaphragm includes first composite layer, second composite layer, third composite layer and metal layer, wherein second composite layer is located between first composite layer and third composite layer. The utility model has simple structure, reasonable in design, small, meet the development demand of the miniaturization of sound-emitting electronic product, simultaneously, diaphragm conducting circuit cannot have abrasion in long-term vibration process, service life is long, it is worth promoting and using.

The present invention relates to a thin speaker comprising: a frame; a magnetic circuit part coupled to the frame to form a magnetic circuit; a voice coil disposed on the magnetic path; a vibration part which vibrates along with the vibration of the voice coil; and a centring disk disposed on an inner side of the vibration portion and configured to buffer vibration, the vibration portion including: an inner diaphragm connected to the voice coil; and an outer diaphragm disposed on the upper side of the inner diaphragm.

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.

The present disclosure discloses a NiMo-based nanomaterial earphone diaphragm sand a preparation method thereof. The diaphragm uses a paper base film as the basis, and a uniform distribution of a NiMo-based nanomaterial coating is formed on a surface of the base film by plasma modification and electrostatic spraying technology, forming a concentric ring structure and using the NiMo-based nanomaterial as connecting lines to enhance the stability and conductive performance of the overall structure. This design not only significantly improves the audio quality performance of the earphones, including clarity, detail restoration, and dynamic range, but also greatly improves the durability and environmental adaptability of the diaphragm. The present disclosure provides an innovative solution for high-end earphone manufacturing, and is especially suitable for music lovers who pursue the ultimate audio experience and professional audio fields.

The method for tuning the flat acoustic transducer by area comprises the following steps: defining a forward center tuning area corresponding to the middle area of the diaphragm and a forward periphery tuning area corresponding to the periphery area of the diaphragm on the front cavity end face of the flat acoustic transducer; applying one or more layers of superimposed and combined tuning materials with different air permeability and thickness in the forward center tuning area and the forward periphery tuning area respectively; defining a backward center tuning area corresponding to the middle area of the diaphragm and a backward periphery tuning area corresponding to the periphery area of the diaphragm on the rear cavity end face of the flat acoustic transducer; and applying one or more layers of superimposed and combined tuning materials with different air permeability and thickness in the backward center tuning area and the backward periphery tuning area respectively. The structure for tuning the flat acoustic transducer by area comprises a flat acoustic transducer, a forward tuning system constructed on the front cavity end cover of the flat acoustic transducer, and a backward tuning system constructed on the rear cavity end cover of the flat acoustic transducer.