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7620193 |
Acoustic actuators
An acoustic transducer comprises an active element which changes in length along a first axis in response to an audiofrequency input signal, the element being mounted between an inertial mass and a...
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7596235 |
Transducer
Improved transducer for reproducing and/or recording sound, comprising a membrane onto which is provided a one-piece or multipart piezo-electric element, characterized in that the membrane is...
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7583811 |
Electro-optical device and electronic apparatus
An electro-optical device includes an electro-optical panel, a sound-production frame that is disposed on a rear surface of the electro-optical panel and that constitutes a sound-production space,...
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7583011 |
Package of surface-mountable electronic component
A package of a surface-mountable electronic component to be reflow-soldered to a circuit board at about 250° C. or more includes a case and a cover. The cover has a softening temperature lower...
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7579753 |
Transducers with annular contacts
An electronic device and transducer structures are described.
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RE40860 |
Electrostatic audio loudspeakers
An electrostatic transducer, such as a loudspeaker or microphone, comprises a multi-layer panel ( 1 ) incorporating an electrically insulating middle layer ( 2 ) sandwiched between first and second...
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7555133 |
Electro-acoustic transducer
An electro-acoustic transducer includes a first electro-acoustic transduction unit. The first electro-acoustic transduction unit includes an acoustic radiation plate which radiates a sound wave, a...
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7545945 |
Comb sense microphone
There is provided a rigid hinged substrate, which forms a diaphragm for miniature microphones. A series of fingers disposed radially around the perimeter of the diaphragm interacts with mating...
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7475598 |
Electromechanical force transducer
An electromechanical force transducer comprises at least two adjacent resonant elements and a damping layer coupled between their adjacent faces. The damping layer is selected so that the output is...
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7447324 |
Piezoelectric sounding body and electronic device using the same
Electrode layers 22 A- 22 C, 24 A- 24 C are formed on both main surfaces of each of piezoelectric layers 20 A, 20 B. Voltages of different polarities are respectively applied to the electrode...
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7421088 |
Multifunction transducer
Multi-function transducers ( 130, 700 ) that are suitable for use in handheld devices such as cellular telephones ( 100, 900 ) and are capable of emitting audio, and generating accelerations of...
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7378776 |
Piezoelectric ceramic composition and piezoelectric elements using the same
A piezoelectric ceramic composition includes a top-layer, a bottom-layer and at least one intermediate-layer ceramic sheets stacked to each other for sintering. An alloy layer of silver and...
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7376236 |
Piezoelectric film sonic emitter
A speaker device for emitting subsonic, sonic or ultrasonic compression waves comprising a generally hollow drum, a rigid emitter plate attached to the drum, and a plurality of apertures formed...
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7333621 |
Conductive stub of sound exciter
A conductive stub of a sound exciter comprises an insulating stub and at least two beams. Each beam has a positive electrode surface and a negative electrode surface. The stub is connected with a...
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7316289 |
Electro-acoustic transducer and method of manufacturing transducer
An electro-acoustic transducer includes a tone generator, a vibrator, and a case. The tone generator includes a diaphragm, and a voice coil joined to the diaphragm. The vibrator includes a magnetic...
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7289638 |
Electroacoustic microphone
An electroacoustic capsule or electroacoustic transducer for an electroacoustic device has electrostrictive or magnetostrictive elements connected to a controllable power supply. Dimensional...
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7286680 |
Cylindrical microphone having an electret assembly in the end cover
A microphone includes a separate end cover with a sound port. A diaphragm is directly attached to the end cover. The backplate is positioned within the housing against a ridge near an end of the...
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7247976 |
Piezoelectric vibrator
A piezoelectric vibrator having excellent shock resistance and high reliability is offered. The centers of first and second piezoelectric vibrating plates are supported by pillars on a main surface...
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7227967 |
Piezoelectric transducer adapted to bridge of stringed instrument
A piezoelectric transducer, adapted to a bridge of a stringed instrument such as a sound mute guitar, comprises a piezoelectric element roughly having an elongated rectangular shape, a pair of...
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7227966 |
Piezo-electric speaker
A piezo-electric speaker ensures a uniform sound in a broad band and can easily reproduce a signal of large amplitude or sound. A piezo-electric speaker has a piezo-electric member to generate a...
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7224814 |
Two-way communication device
A two-way communication device includes a magnetoelastic rod located between an inertial back mass and a front panel of low mass. A coil is located in the vicinity of the rod, and the rod and coil...
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7224813 |
Loudspeaker using an electro-active device
A loudspeaker comprising: a support, a sound-generating element mounted to the support for vibration to generate sound; and an electro-active device coupled between the support and the...
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7212641 |
Electromechanical acoustic liner
A multi-resonator-based system responsive to acoustic waves includes at least two resonators, each including a bottom plate, side walls secured to the bottom plate, and a top plate disposed on top...
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7201996 |
Sound generator for a portable device
A sound generating device is mounted in a recess formed in a case, and a battery is mounted on the case. A pair of terminals are provided on the underside of the case. A pair of leads connect a...
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7177434 |
Stepped sound producing module
A generally pyramid shaped sound module is provided that is attachable to a balloon for producing hi-fidelity sound effects. The sound module includes a piezoelectric element connected at the top...
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7151837 |
Loudspeaker
A bending wave loudspeaker includes a transparent acoustic radiator capable of supporting bending wave vibration and an electromechanical force transducer mounted to the acoustic radiator to excite...
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7149318 |
Resonant element transducer
A transducer ( 14 ) for producing a force which excites an acoustic radiator, e.g. a panel ( 12 ) to produce an acoustic output. The transducer ( 14 ) has an intended operative frequency range and...
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7141919 |
Piezoelectric electroacoustic transducer
A piezoelectric electroacoustic transducer includes a piezoelectric sounding body in which bending vibration is generated by applying an alternating signal between two electrodes, a case housing...
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7136501 |
Acoustically enhanced electro-dynamic loudspeakers
An electro-dynamic loudspeaker is provided with dampening arrangements that contribute to improved acoustical properties for the electro-dynamic planar loudspeaker. The dampening arrangements...
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7136496 |
Electret assembly for a microphone having a backplate with improved charge stability
The present invention relates to a microphone that includes a housing and a diaphragm and backplate located with the housing. The housing has a sound port for receiving the sound. The diaphragm...
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7130436 |
Helmet with built-in speaker system and speaker system for helmet
A speaker system is installed in a helmet, and includes a pair of piezoelectric speakers, frames supporting the speakers around the peripheral edges thereof, and laminated films for protecting the...
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7106869 |
Condenser microphone
The present invention relates to a condenser microphone whose body can be miniaturized while keeping a property and a sound quality comparable to those of a conventional condenser microphone. The...
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7095864 |
Electrostatic audio loudspeakers
An electrostatic transducer, such as a loudspeaker or microphone, comprises a multi-layer panel ( 1 ) incorporating an electrically insulating middle layer ( 2 ) sandwiched between first and second...
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7092539 |
MEMS based acoustic array
Embodiments of the present invention described and shown in the specification and drawings include a combination responsive to an acoustic wave that can be utilized as a dynamic pressure sensor. In...
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7079661 |
Speaker for super-high frequency range reproduction
A speaker is provided that is operable to reproduce ultrahigh frequencies. Specifically, the speaker outputs ultrahigh frequencies up to 100 kHz with stable sound pressure. The speaker may include...
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7068800 |
Speaker apparatus
A speaker apparatus can ensure a large size and area of a diaphragm so as to improve reproducing capability in a low sound range and increase an output sound pressure, and can constitute a...
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7062058 |
Cylindrical microphone having an electret assembly in the end cover
A microphone includes a separate end cover with a sound port. A diaphragm is directly attached to the end cover. The backplate is positioned within the housing against a ridge near an end of the...
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7039206 |
Dual diaphragm speaker
A dual diaphragm speaker comprising first and second diaphragms operating in accordance with the piezoelectric effect, the diaphragms being arranged to be driven in opposite phase with respect to...
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7027610 |
Loudspeaker
A loudspeaker contains a hemispherical vibrator. The end portion of the hemispherical vibrator on the side opposite to the hemispherical curved surface is mounted on the main surface of a first...
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7020295 |
Piezoelectric electroacoustic transducer and manufacturing method of the same
A piezoelectric electroacoustic transducer includes a substantially rectangular piezoelectric diaphragm having electrodes and flexurally vibrating in response to application of an alternating...
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7019621 |
Methods and apparatus to increase sound quality of piezoelectric devices
A piezoelectric transducer comprises a piezoelectric component, an acoustic member attached to one of the surfaces of the piezoelectric component and a dampening material of low elastic modulus...
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7019439 |
High power ultrasonic transducer with broadband frequency characteristics at all overtones and harmonics
A transducer assembly for receiving a stimulating signal and producing ultrasound therefrom at one or more frequencies, over an ultrabroad bandwidth at each frequency, includes a front mass...
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7006640 |
Speaker
A pole piece 19 of a speaker main unit 1 has a pole 19 a engaged with a bobbin 14 from the back side of a diaphragm 12 , and a flange 19 b horizontally expanding from the base of the...
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7003125 |
Micromachined piezoelectric microspeaker and fabricating method thereof
A micromachined piezoelectric microspeaker and its fabricating method are disclosed. The micromachined piezoelectric microspeaker comprises a diaphragm and a plurality of contact pads. The...
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6987445 |
Water resistant audible signal
The invention is an modified audible signal, such as a piezoelectric noise-making and audible signaling device, which further includes a hydrophobic covering material, such as...
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6978032 |
Piezoelectric speaker
A piezoelectric speaker improved in acoustic features by weight reduction of a diaphragm of the piezoelectric speaker without decreasing stiffness of the diaphragm or a coefficient of thermal...
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6965680 |
Piezoelectric electro-acoustic transducer
A piezoelectric electro-acoustic transducer includes a piezoelectric vibration plate having a plurality of piezoelectric ceramic layers laminated to each other with an internal electrode being...
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6965678 |
Electronic article comprising loudspeaker and touch pad
A touch pad assembly for use in an electronic article. The assembly comprises a touch pad, a coupler for mechanically coupling the touch pad to casing of the electronic article and a transducer...
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6947568 |
Condenser microphone
A back plate having a stationary back electrode is secured to a substrate. A diaphragm electrode is mounted on the back plate interposing a spacer. A frame having a sound collecting hole is mounted...
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6940564 |
Display substrate and display device
A display substrate comprising a plate, for example a glass plate, on which display elements, e.g. pixels comprising pixel electrodes and thin-film-transistors, and an acoustic transducer, e.g. a...
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