95results 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

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.

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.

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

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.

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 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.

This application discloses a speaker and a headset, and belongs to the field of audio technologies. The headset includes a speaker, and the speaker includes a first magnetic body, a second magnetic body, a basket, a first voice coil, a first diaphragm, a second voice coil, and a second diaphragm. The first magnetic body is disposed around an outer circumference of the second magnetic body. The basket includes a peripheral part and a basket top connected to the peripheral part. The peripheral part is disposed around an outer circumference of the first magnetic body. The first voice coil is connected to the first diaphragm. The first magnetic body and the basket top are combined to form a magnetic loop with the second magnetic body. The first voice coil, the first magnetic body, the second magnetic body, and the basket top are fitted to drive the first diaphragm to vibrate. The second voice coil is connected to the second diaphragm. A partial structure of the second voice coil extends into a first magnetic gap. A magnetic loop is formed between the first magnetic body and the peripheral part. The second voice coil, the first magnetic body, and the peripheral part are fitted to drive the second diaphragm to vibrate. This application helps reduce a volume of the headset, and facilitates miniaturization of the headset.

The diaphragm involved in the present invention includes an intermediate layer and a coating coated on both surfaces of the intermediate layer. The intermediate layer is a carbon graphite / carbon nanotube layer, and the coating is a diamond-like coating. The carbon nanotubes are interwoven to form a porous membrane with a macroscopic membrane-like morphology and a microscopic network structure. The carbon graphite is interspersed in the internal gaps of the carbon nanotube porous membrane. The carbon graphite and carbon nanotubes together form a carbon graphite / carbon nanotube layer with a relatively dense internal structure. The diamond-like coating has high specific elasticity, high bending rigidity and high internal damping. The obtained diaphragm has good acoustic effect, good moisture-proof performance, good mildew resistance, low production cost and simple preparation method.

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.

To provide a film for a diaphragm which is excellent in low-temperature characteristics, heat resistance and flexibility and has a feature that a change in flexibility from a low temperature to a high temperature is small.SOLUTION: The film for a diaphragm uses a polycarbonate resin composition which contains a carbonate structural unit (X) derived from an aliphatic dihydroxy compound (1) represented by the following formula (1) and a carbonate structural unit (Y) derived from a dihydroxy compound (2) satisfying the following requirement I and which has a melting point peak temperature as measured by a differential scanning calorimeter. <Requirement I> A polycarbonate resin (2) obtained by polymerizing the dihydroxy compound (2) and a carbonate source by a transesterification method has a melting point peak temperature as measured by a differential scanning calorimeter. (X and Y are each a single bond or a divalent liking group comprising 1-15 carbon atoms, 0-6 oxygen atoms and 2-30 hydrogen atoms and having no cyclic structure; and n is 2-100.)SELECTED DRAWING: None

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.

To reproduce a wide frequency band at a high sound pressure.SOLUTION: A piezoelectric sounder 10 of the present disclosure includes a plate-shaped piezoelectric ceramic 20 having one surface and the other surface, a metal plate 30 having an inner peripheral part 31 bonded to one surface of the piezoelectric ceramic 20 and an outer peripheral part 32 located on the outer peripheral side of the inner peripheral part 31, a vibration plate 40 having a covering part 43 covering the metal plate 30 from the side opposite to the piezoelectric ceramic 20 in which an opening edge part 42 of an opening 41 of the covering part 43 that opens toward the metal plate 30 extends toward the outer peripheral part 32 and a part of the covering part 43 is bonded to the metal plate 30, and a fixing part 50 that fixes the other surface of the piezoelectric ceramic 20. According to such a configuration, a diaphragm 40 can be driven by the outer peripheral part 32 of the metal plate 30. Since the diaphragm 40 is driven by bending of the metal plate 30 and the change in a radial direction, a sound in a wide band can be generated with a high sound pressure. In addition to characteristics of the piezoelectric sounder 10 itself, arbitrary acoustic characteristics can be obtained depending on the material and shape of the diaphragm 40.SELECTED DRAWING: Figure 2

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.

The present application discloses a microphone, comprising: a shell structure and a vibration pickup portion, wherein the vibration pickup portion generates vibrations in response to the vibration of the shell structure; a vibration transmission portion, configured to transmit the vibrations generated by the vibration pickup portion; and an acoustic-to-electric conversion element, configured to receive the vibrations transmitted by the vibration transmission portion and generate an electrical signal; wherein a vacuum cavity is formed between at least a portion of the structure of the vibration pickup portion and the vibration transmission portion, and the acoustic-to-electric conversion element is located in the vacuum cavity.