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230results about "Diaphragm damping" patented technology
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Bone conduction device
InactiveUS20060098829A1Sufficient sound volumeClearly catchBone conduction transducer hearing devicesEarpiece/earphone attachmentsBone conduction hearingBiomedical engineering
A bone conduction device which, when particularly employed in the receiver of a bone conduction telephone, is capable of obtaining a sufficient amount of sound as to not only a bone conduction sound but also an aerial vibration sound to ensure clear reception of the sound. The bone conduction device comprises a bone conduction device unit and a case receiving the device unit therein to serve as a vibration section and is characterized in that a compliance increasing means, such as a corrugation, is disposed along the peripheral edge of the vibrating surface of the case having the bone conduction device unit fixed thereto.
Owner:TEMCO JAPAN
Acoustic converter diaphragm, and acoustic converter
InactiveUS20110026757A1Acoustic quality can be degradedIncrease temperatureTransducer detailsPolymeric diaphragmsEngineering
Owner:PIONEER CORP +1
Speaker
ActiveUS20050201588A1Reduce Harmonic DistortionImprove power linearityTransducer detailsNon-planar diaphragms/conesMiniaturizationEngineering
A speaker has diaphragm (16) and suspension holder (19) disposed on the back surface of the diaphragm. In the diaphragm, the part from a bent section (21) disposed between the outer periphery and the inner periphery to the outer periphery is formed in a conical shape. The diaphragm is coupled to the suspension holder through the bent section of the diaphragm. This configuration can omit a damper causing the nonlinearity and asymmetry of suspension, reduce the harmonic distortion of the speaker, improve the power linearity, and improve the performance of the speaker. Even a flat shape can secure sufficient rigidity, so that securing the rigidity of the diaphragm does not require large thickness of the diaphragm and downsizing and low profile can be realized.
Owner:PANASONIC CORP
Magnetic circuit having dual magnets, speaker and vibration generating apparatus using the same
InactiveUS20060093180A1Good linear responseAvoid Flux LeakageTransducer detailsHearing device energy consumption reductionBobbinElectrical polarity
A magnetic circuit having a dual magnet, a speaker and a vibration generating apparatus using the same are provided. The magnetic circuit includes a magnetic gap having a small magnetic loss and an increasing magnetic flux density, in which a uniform distribution of a line of magnetic force can be realized on yoke surfaces facing each other. The speaker includes lower and upper magnets which are spaced so that mutually identical polarities oppose each other; a first yoke integrally having a loop-type circulating circuit portion extended from the lower magnet to the upper magnet and an extension portion which is extended perpendicularly upwards from the lower magnet; a second yoke which connects between the lower and upper magnets and forms a magnetic gap between the second yoke and the extension portion of the first yoke; a coil disposed in the magnetic gap and wound around a bobbin; a frame which is extended from the first yoke; a vibrating diaphragm generating an acoustic sound in correspondence to a drive signal; a damper limiting a vibration range of the bobbin; and a center cap covering the bobbin.
Owner:KIM SEONG BAE
Condenser microphone array chip
A plurality of structures of condenser microphones is fabricated in a single condenser microphone array chip. The condenser microphone array chip includes a substrate having a plurality of openings serving as air cavities, a first insulating layer formed in the outer periphery of the openings, a first electrode layer stretched over each of the openings, a second insulating layer formed above the first electrode layer in the outer periphery of the openings, a second electrode layer formed above the second insulating layer relative to the first electrode layer via an air gap therebetween. The structures are connected via a plurality of bridges and separated via a plurality of channels therebetween. The channels circumvent the bridges so that at least the second insulating layer is partially removed from the channels. The bridges are formed using the second electrode layer serving as wiring for electrically connecting the structures of condenser microphones.
Owner:INFINEON TECH AG
Acoustic Generator
ActiveUS20130094681A1Increase sound pressureReduce generationPiezoelectric/electrostrictive transducersMechanical vibrations separationEngineeringPeak value
Provided is an acoustic generator which has a high sound pressure at ultrahigh frequencies and which can suppress occurrence of large peak dips. An acoustic generator includes a film, a frame member disposed on an outer peripheral edge of the film, a piezoelectric element disposed on the film and inside the frame member, and a resin layer filled inside the frame member so as to cover the piezoelectric element.
Owner:KYOCERA CORP
Transducer apparatus
An acoustic transducer comprising: a mechanical acoustic filter configured to be electrically controllable to change the acoustic properties of the transducer.
Owner:NOKIA TECHNOLOGLES OY
Speaker
InactiveUS20120263339A1Suppression of distortionImprove driving efficiencyDiaphragm dampingFrequency/directions obtaining arrangementsEngineeringSnubber
A damper, which is an element of a speaker and suppresses the rolling of a voice coil unit, includes a corrugated structure portion at its inner periphery and a leaf spring at its outer periphery. By coupling the corrugated structure portion to the voice coil unit and coupling the leaf spring to the frame, the distortion of a speaker can be reduced and the driving efficiency can be improved.
Owner:PANASONIC CORP
Speaker device
ActiveUS20160205479A1Diaphragm dampingFrequency/directions obtaining arrangementsEngineeringElectrical drive
The present invention relates to a speaker device (1) having a first diaphragm (3) and a second diaphragm (5). A first magnet (19) is mounted to the first diaphragm (3) and a second magnet (25) is mounted to the second diaphragm (5). The first magnet (19) is a first electromagnet having a first coil (23) and a power source driver is provided for supplying an electrical drive signal to the first coil (23) to establish said first magnetic field. The first and second magnets (19, 25) are arranged to generate first and second interacting magnetic fields which drive the first and second diaphragms (3, 5). The invention also relates to a speaker device (101) in which the second diaphragm (5) is replaced with a fixed back plate (135). The present invention also relates to a speaker assembly (45) made up of an array of the speaker devices (1; 101). The speaker device (1) can be used in a motor vehicle.
Owner:JAGUAR LAND ROVER LTD
Speaker, module using the same, electronic equipment and device, and speaker producing method
InactiveUS20070140519A1Without reducing sizeTransducer detailsDiaphragm dampingEngineeringLoudspeaker
An edge (29) for supporting a diaphragm assembly (100) with respect to a frame (26) is bonded to the frame (26) along the outer periphery thereof and joined to a diaphragm (27) in a position more peripherally inward than a voice coil (28) along the inner periphery thereof. The edge (29) partly overlaps diaphragm (27). This structure allows downsizing of the speaker, without reducing the sizes of a permanent magnet (21) and the edge (29).
Owner:PANASONIC CORP
Transducer module
InactiveCN102996376AAvoid lostReduce reflectionPiezoelectric/electrostriction/magnetostriction machinesLoudspeaker transducer fixingTransducerEngineering
The present invention is directed to a transducer module, which includes an actuator that is directly or indirectly coupled to a vibration plate. The transducer module includes a plastic damper that elastically secures the vibration plate to a frame.
Owner:CHIEF LAND ELECTRONICS CO LTD
Flat Panel Speaker And Display Unit
ActiveUS20190028787A1Curb recessionLoudspeaker transducer fixingBending wave transducersDisplay deviceEngineering
A flat panel speaker according to an embodiment of the disclosure includes a flat panel and a plurality of vibrators that are disposed on a back surface of the flat panel. The plurality of vibrators are disposed to avoid a location that most easily vibrates in an entire range of audio frequencies when vibration is generated in the flat panel by the plurality of vibrators. A large stationary wave with respect to the flat panel therefore does not easily occur.
Owner:SONY CORP
Acoustic transducer comprising a plurality of coaxially arranged diaphragms
ActiveUS20090190791A1Improve fidelityIncrease the sound pressure levelLoudspeakersDiaphragm dampingNoise generationTransducer
An acoustic transducer comprises one or more electromagnetic motors that drive one or more sets of multiple diaphragms to provide acoustically efficient loudspeaker systems having dimensions that allow use in applications that would be difficult or impossible with traditional transducers. The diaphragms may be driven directly, inertially or fluidically. If diaphragms are driven by rods that pass through holes in the diaphragms, noise may be generated by air that leaks through the pass-through holes. This noise may be reduced or eliminated by measures that reduce or eliminate the air leakage.
Owner:TYMPHANY HK
Acoustic transducer
ActiveUS20150230027A1Avoid separationReduce gapSemiconductor electrostatic transducersDiaphragm extensionsTransducerEngineering
Owner:MMI SEMICON CO LTD
Hinge systems for audio transducers and audio transducers or devices incorporating the same
ActiveUS20170078798A1Metallic diaphragmsPiezoelectric/electrostrictive transducersEngineeringHeadphones
The invention relates to audio transducers, such as loudspeaker, microphones and the like, and includes improvements in or relating to hinge systems for rotational action audio transducers. The hinge systems of the invention being configured to operatively support a diaphragm in use, and comprising a hinge assembly having one or more hinge joints, wherein each hinge joint comprises a hinge element and a contact member. The contact member comprises a contact surface and the configuration is such that during operation each hinge joint is configured to allow the hinge element to move relative to the associated contact member, while maintaining a substantially consistent physical contact with the contact surface. The hinge assembly biases the hinge element towards the contact surface. Preferably the hinge assembly is configured to apply a biasing force to the hinge element of each joint toward the associated contact surface, compliantly. Various applications and implementations are described and envisaged for the audio transducer embodiments including, for example, personal audio devices such as headphones, earphones and the like.
Owner:WING ACOUSTICS LTD
Display apparatus
ActiveUS20200077194A1Add dimensionImprove the immersive experienceDigital data processing detailsAdvertisingSound generationEngineering
Owner:LG DISPLAY CO LTD
Micromechanical sound transducer
ActiveUS20200100033A1Accurate and reliable detectionPrecise positioningMicrophonesLoudspeakersVertical vibrationMicromachinery
A micromechanical sound transducer according to a first aspect includes a first bending transducer with a free end and a second bending transducer with a free end, the two bending transducers being arranged in a mutual plane, wherein the free end of the first bending transducer is separated from the free end of the second bending transducer via a slit. The second bending transducer is excited in-phase with the vertical vibration of the first bending transducer. A micromechanical sound transducer according to a second aspect includes a first bending transducer that is excited to vibrate vertically and a diaphragm element extending vertically to the first bending transducer, the diaphragm element being separated from a free end of the first bending transducer via a slit.
Owner:FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
Speaker
InactiveUS20080159583A1Add additional massIncreased mechanical resistanceNon-planar diaphragms/conesDiaphragm dampingResonanceEngineering
A speaker of the present invention includes the following: a diaphragm that includes an inner periphery coupled to a voice coil, and a corrugation provided at the intermediate position between the inner periphery and an outer periphery; a speaker edge for supporting the outer periphery of the diaphragm; and a damping member attached to an outer peripheral part of the diaphragm outside the vicinity of an outer periphery of the corrugation. The effective vibration area of an inner peripheral part of the diaphragm inside an inner periphery of the corrugation is substantially half or less of the total effective vibration area. The damping member is configured as a damping portion by extending an overlap portion of the speaker edge overlapping with the diaphragm to the vicinity of the outer periphery of the corrugation. This configuration can suppress the vibration transmission at high frequencies to the outer peripheral part of the diaphragm outside the corrugation, allows only the inner peripheral part of the diaphragm inside the corrugation to mainly vibrate at high frequencies, and also can suppress a resonance in the outer peripheral part of the diaphragm outside the corrugation. Thus, the speaker can have both an excellent high frequency response and an excellent mid-high frequency response.
Owner:PANASONIC CORP
Electromechanical vibration converter for tactile acoustic apparatus
A damper 8 supports a yoke portion 16, 17 holding a magnet 18 therein. The damper 8 includes an annular yoke retainer portion 8a holding the yoke portion, a plurality of support portions 8b projecting radially outward from the yoke retainer portion 8a, a plurality of suspension spring portions 8c extending from each of the plurality of support portions 8b to an adjacent support portion along a periphery of the yoke retainer portion 8a, and a plurality of T-shaped projections 8T provided on an end of each of the plurality of suspension spring portions 8c. The plurality of T-shaped projections 8T are respectively fitted in notches K in a case so that the yoke portion 16, 17 is movable relative to the case. Because the damper 8 can be fixed to the case without any screws, the electromechanical vibration converter can readily be assembled and produced in a speaker manufacturing line.
Owner:AISHIN
Audio Speaker Surround Geometry For Improved Pistonic Motion
An audio speaker having a suspension system including a surround to support a diaphragm within a frame and to reduce non-pistonic motion of the diaphragm at several resonant frequencies is disclosed. More particularly, embodiments of the surround include a film that undulates in a peripheral direction around the diaphragm and includes several undulations above and below a radial gap between the diaphragm and the frame. Other embodiments are also described and claimed.
Owner:APPLE INC
Audio speaker surround geometry for improved pistonic motion
An audio speaker having a suspension system including a surround to support a diaphragm within a frame and to reduce non-pistonic motion of the diaphragm at several resonant frequencies is disclosed. More particularly, embodiments of the surround include a film that undulates in a peripheral direction around the diaphragm and includes several undulations above and below a radial gap between the diaphragm and the frame. Other embodiments are also described and claimed.
Owner:APPLE INC
Speaker, module using the same, electronic equipment and device, and speaker producing method
An edge (29) for supporting a diaphragm assembly (100) with respect to a frame (26) is bonded to the frame (26) along the outer periphery thereof and joined to a diaphragm (27) in a position more peripherally inward than a voice coil (28) along the inner periphery thereof. The edge (29) partly overlaps diaphragm (27). This structure allows downsizing of the speaker, without reducing the sizes of a permanent magnet (21) and the edge (29).
Owner:PANASONIC CORP
Distributed mode louspeaker damping oscillations within exciter feet
ActiveUS20160360313A1Improve performanceIncrease amplitudeBending wave transducersDiaphragm dampingEngineeringLoudspeaker
There is provided a flat panel loudspeaker comprising a resonant panel, an exciter comprising a foot generally cylindrical in shape, coupled to the resonant panel and defining an inner region of the resonant panel. The exciter is drivable to vibrate the resonant panel via the foot, whereby to produce a sound. A stiffness of the resonant panel in the inner region is greater than a stiffness of the resonant panel in a region of the resonant panel outside the inner region. Additionally or alternatively, the flat panel loudspeaker further comprises a damping member in contact with the inner region of the resonant panel and arranged inside the foot to generally brace against the vibration of the resonant panel so as to damp a response of the resonant panel in the inner region to a vibration from the exciter.
Owner:AMINA TECH
Audio device with dynamic microphone and speaker
ActiveUS10893366B1High impedanceImprove sound qualityMicrophonesLoudspeaker transducer fixingEngineeringSound quality
An audio device includes a casing, a handle frame downwardly extended from a bottom side of the casing, a speaker assembly and a PCB board are received in the casing, and a microphone supported on the casing in a dynamic manner for preventing a vibration of the casing directly transmitted to the microphone. The microphone and the speaker assembly are electrically connected to the PCB board, such that the speaker assembly is adapted for instantly play back a sound signal collected by the microphone. The audio device of the present invention has an advantages of high impedance, good sound quality, and strong omni-directional ability, such that the electro-acoustic conversion effect and overall performance of the audio device is enhanced. At the same time, the audio device has a built-in speaker to instantly play back the sound collected by the microphone so as to fulfill different applications.
Owner:SHENZHEN HUA SIRUI TECH CO LTD
Hybrid thin film heterostructure modular vibration control apparatus and methods for fabrication thereof
InactiveUS7529154B2Lowered byPiezoelectric/electrostriction/magnetostriction machinesStands/trestlesVibration controlShape-memory alloy
Microelectromechanical systems (MEMS) include critical devices for various highly sensitive applications. However, MEMS operation may be impaired by vibration. A modular vibration control pedestal for integration with a MEMS is provided according to embodiments of the present invention which includes a piezoelectric perovskite oxide disposed on a substrate and a shape memory alloy component component disposed on the piezoelectric perovskite oxide. In particular embodiments of a MEMS device including a modular VCP, vibration is reduced by at least 50%.
Owner:UNITED STATES OF AMERICA THE AS REPRESENTED BY THE SEC OF THE ARMY
Magnetic circuit having dual magnets, speaker and vibration generating apparatus using the same
InactiveCN101044787AHigh outputEfficient outputHearing device energy consumption reductionDiaphragm dampingMagnetic tension forceBobbin
Owner:金成培
Acoustic Generator
ActiveUS20140314255A1Reduce generationIncrease sound pressurePiezoelectric/electrostriction/magnetostriction machinesPiezoelectric/electrostrictive transducersElectricityEngineering
Provided is an acoustic generator which has a high sound pressure at ultrahigh frequencies and which can suppress occurrence of large peak dips. An acoustic generator includes a film, a frame member disposed on an outer peripheral edge of the film, a piezoelectric element disposed on the film and inside the frame member, and a resin layer filled inside the frame member so as to cover the piezoelectric element.
Owner:KYOCERA CORP
Bone conduction device
InactiveCN1759632ABone conduction transducer hearing devicesEarpiece/earphone attachmentsEngineeringBone conduction hearing
The objective of the invention is to provide a bone conduction device, in particularly employed in the receiver of a bone conduction telephone, which is capable of obtaining sufficient sound quantities as to not only bone conduction sound but also aerial vibration sound to ensure clear reception of sound. The bone conduction device comprises a bone conduction device unit and a case receiving the same to serve as a vibration section, and is characterized in that a compliance increasing mechanism, such as corrugations, is disposed along the peripheral edge of the vibrating surface of the case having the bone conduction device unit fixed thereto.
Owner:TEMCO JAPAN
Speaker
ActiveUS7203333B2Reduce Harmonic DistortionImprove linearityTransducer detailsNon-planar diaphragms/conesEngineeringLoudspeaker
A speaker has a diaphragm (16) and a suspension holder (19) supporting the diaphragm from the back surface of the diaphragm. The diaphragm has a bent section (21) disposed between its outer periphery and its inner periphery, with the portion to the outer periphery having a conical shape. The diaphragm is coupled to the suspension holder at the bent section. This configuration can omit a damper that causes nonlinearity and asymmetry of suspension, to reduce the harmonic distortion of the speaker and improve the power linearity and the performance of the speaker. The diaphragm can have a flat configuration at its inner peripheral portion, can be secured with sufficient rigidity, and can be rigidly secured to a frame of the sneaker. This can reduce the thickness of the diaphragm and enable formation of a smaller, low profile sneaker can be realized.
Owner:PANASONIC CORP
Acoustic diaphragm and speaker
InactiveUS20090038878A1Improve reproductive characteristicsEnrich the sound field expressionTransducer detailsDiaphragm dampingEngineeringLoudspeaker
An acoustic diaphragm includes a diaphragm formed of a uniform material and a first standing wave suppression member provided on a surface of the diaphragm along a first direction of passing through a center of the diaphragm.
Owner:JVC KENWOOD CORP A CORP OF JAPAN
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