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WO/2010/010701A1 |
A diaphragm for a speaker is formed by making a sheet by using fibers extracted from bamboo leaves in a content of at least 5 wt%. Consequently, a high-sound-quality diaphragm for a speaker that has improved rigidity and a light environ...
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WO/2010/010727A1 |
Disclosed is an organic piezoelectric material film which has little contaminants and has excellent piezoelectric properties. The organic piezoelectric material film is produced by a solution casting process using, as raw materials, a ra...
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WO/2009/154091A1 |
The manufacture yield of a semiconductor device (capacitive micromachined ultrasonic transducer) is improved. A plurality of first chips (1) wherein a plurality of cells having a function of transmitting/receiving ultrasonic waves are f...
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WO/2009/147848A1 |
The variation of the amount of charge given to an electretized dielectric film because of ionizer irradiation is reduced, and the variation of the sensitivity of a microphone is also reduced. A conductor (4) is maintained in a floating s...
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WO/2009/148026A1 |
A diaphragm is provided with a first layer (3), which includes a fiber material and has a first surface and a second surface facing the first surface; a second layer (2), which includes a natural wood sliced into a sheet having a thickne...
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WO/2009/144773A1 |
An electromagnetic convertor comprises eternal magnets arranged with a predetermined gap therebetween and with their polarities alternately different from each other, a vibrating membrane which is arranged opposite to the eternal magnet ...
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WO/2009/139400A1 |
A ultrasonic probe is provided with a cMUT chip having a plurality of vibration elements that change electro-mechanical coupling coefficients or sensitivities in accordance with a bias voltage to transmit and receive ultrasonic waves, an...
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WO/2009/120429A1 |
A water-resistant composite paper, suitable for use as a loudspeaker component, is made from a composition including wood pulp, hydrophobic fibers, stiffening fibers that retain stiffness when wet, and fluorocarbon. In some examples, fib...
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WO/2009/116957A2 |
A device for sensing an acoustic signal comprises a backplate of electrically conductive material, with the backplate defining at least one channel, and a diaphragm of electrically conductive material that is connected to, and insulated ...
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WO/2009/113433A1 |
Disclosed is an organic piezoelectric material which has particularly excellent heat resistance, while exhibiting excellent transparency, surface gloss, adhesion and piezoelectric characteristics. Also disclosed are an ultrasonic transdu...
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WO/2009/113432A1 |
Provided is an organic piezoelectric material which has excellent piezoelectric property, heat resistance property in particular. An ultrasonic oscillator, which is to be used for an ultrasonic medical diagnostic imaging device which can...
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WO/2009/112241A1 |
The invention relates to a condenser microphone comprising a microphone capsule (100), which has an at least partially electrically conductive membrane (110) and a counter electrode (120) associated therewith. The counter electrode (120)...
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WO/2009/109799A2 |
A capacitive transducer includes a substrate having a first surface and a second surface. The first surface of the substrate defines a first plane. The substrate has a cavity with an interior peripheral edge. The cavity extends between t...
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WO/2009/098926A1 |
A speaker (10) includes a magnet (12) and a horizontal coil (22). The magnet (12) is magnetically coupled with a yoke (16), and a resin ring (14) is inserted into a magnetic gap (G) between the magnet (12) and the yoke (16). The horizont...
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WO/2009/093444A1 |
Disclosed in the present invention is a speaker diaphragm equipped with a woven fabric layer impregnated with a thermosetting resin that is thermally cured and a paper layer integrated by being laminated on the back side of the woven fab...
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WO/2009/088001A1 |
This invention provides an ultrasonic probe, a process for producing the ultrasonic probe, and an ultrasonic diagnosis apparatus. In the ultrasonic probe, when an adhesive layer is provided between a plurality of members stacked in an ul...
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WO/2009/086838A1 |
The present invention relates to a magnet assembly (1) for a transducer unitofthe type having a moving membrane and having a voice coil arranged into said magnet assem- bly,said magnet assembly comprising the components i) a T-yoke (2); ...
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WO/2009/088002A1 |
A vibration plate (1) is made of a vibration member (10) provided with a first area portion and a second area portion that are integrally formed by using an isotropic material. The first area portion includes reinforcing members (13a-13d...
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WO/2009/078208A1 |
An ultrasonic probe (2) transmits a first ultrasonic signal into an examinee and receives a second ultrasonic signal based on the first ultrasonic signal and coming from the examinee. The ultrasonic probe (2) includes a plurality of firs...
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WO/2009/077917A2 |
A MEMS microphone (100) is disclosed comprising: a substrate (101), a membrane (102) attached to the substrate (101), and an electrode (104) attached to the substrate ( 101 ), wherein the membrane ( 102 ) and the electrode ( 104 ) have t...
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WO/2009/073325A1 |
A three-dimensional linkage assembly for an electroacoustic transducer comprises a first panel having a first structure and a first opening and a second panel having a second structure and a second opening. The first structure may be dis...
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WO/2009/051850A1 |
A microphone for transducing between an acoustical signal and an electrical signal, comprises a housing and a motor assembly disposed within the housing. The motor assembly includes a backplate and a diaphragm attached to the backplate v...
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WO/2009/044506A1 |
A natural fiber is beaten by a biaxial kneading machine. The beaten natural fiber is made finer by a bead mill so that it has a BET specific surface area of not less than 1 m2/g. By this process, a fine fiber for obtaining a rigid paper-...
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WO/2009/034627A1 |
A magnetic circuit for a speaker, capable of reducing generation of a magnetic flux if thinned to obtain sufficient flux density in a magnetic gap, especially at a position where a voice coil is supported. The magnetic circuit (11) for t...
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WO/2009/013852A1 |
A voice coil wound up in loop shape having the inside is secured to a vibration cone which vibrates in the vibrating direction. A first magnet having a first magnetic pole face is attached to an upper case, and a second magnet having a s...
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WO/2009/014118A1 |
Provided is an MEMS sensor comprising a substrate, a lower thin film arranged to confront one face of the substrate with a space therebetween and having a plurality of lower through holes extending in the thickness direction thereof, and...
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WO/2009/008173A1 |
This invention provides a diaphragm for a speaker, comprising a woven fabric comprising an impregnated heat curing resin in a heat cured state, and a paper board, which has been integrated with the backside of the woven fabric by polymer...
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WO/2009/004518A1 |
A membrane 103 for an acoustic device 100 is provided, the membrane 103, wherein the membrane 103 comprises a central portion 212, an annular portion 105, and a corrugation 107, wherein the annular portion 105 is arranged around the cent...
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WO/2008/129695A1 |
A diaphragm being in a definite shape provided with a convex part and a concave part located in the opposite side to the convex part, which has a first face having the convex part and a second face having the concave part and being locat...
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WO/2008/103723A1 |
A loudspeaker design delivers improved efficiency by reducing the power required from an audio source to produce sound. The loudspeaker includes a magnet housing, at least two magnets and a magnetic flux collector. The magnetic flux coll...
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WO/2008/093011A2 |
The invention relates to a method for adjusting to a desired value (Y) the dimension of an air gap (38) defined between the fixed core (34) and the mobile core (36) of an electromagnet (30) for an electromechanical horn (10) comprising a...
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WO/2008/084641A1 |
A diaphragm for a speaker (1) is formed of a composite (15) containing a resin (16) and a bamboo fiber (17) included therein. This constitution can provide a diaphragm (1) which can simultaneously realize advantages of the bamboo fiber (...
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WO/2008/068740A2 |
A magnetic stripe reading device including a magnetic head assembly including a mounting element, at least one information reading sensor having output contacts, the sensor being mounted in the mounting element and a flat cable coupled t...
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WO/2008/068349A1 |
The invention relates to an electro-acoustic transducer having a membrane (10). The membrane (10) has a first and a second region (20, 30), wherein the hardness, stiffness, or compliance of the first region (20) differs from that of the ...
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WO/2008/062850A1 |
A voice input device includes a first microphone (710-1) with a first vibrating membrane, a second microphone (710-2) with a second vibrating membrane, and a difference signal generating unit (720) that generates a difference signal betw...
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WO/2008/062848A1 |
A voice input device includes a first microphone (710-1) with a first vibrating membrane, a second microphone (710-2) with a second vibrating membrane, and a difference signal generating unit (720) that generates a difference signal betw...
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WO/2008/064313A1 |
A mechanically interlocked acoustic radiator/surround assembly is disclosed wherein an edge of the acoustic radiator includes a protrusion extending from and/or a depression in a surface of the acoustic radiator. An elastomeric material ...
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WO/2008/044381A1 |
A protective film (20) of an SiO2 thin film is formed on a front surface of an Si substrate (12), and a part of the protective film (20) is removed to form an etching window (22). A sacrifice layer (23) of polycrystalline Si is formed in...
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WO/2008/038761A1 |
In a speaker, three magnets are disposed via magnetic gaps for placing of voice coil. The magnetic poles of ambilateral magnets are magnetized so that homopoles face each other. The central magnet has its both poles disposed in the direc...
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WO/2008/037183A1 |
An electromagnetic vibrator is composed of vibration sheet, suspension edge, basin frame and magnetic return path system. The electromagnetic vibrator is prepared as connecting back surface of vibration sheet to voice coil being set in m...
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WO/2008/038762A1 |
In a speaker, three magnets are disposed via magnetic gaps for placing of voice coil. The magnetic poles of ambilateral magnets are magnetized so that homopoles face each other. The central magnet has its both poles disposed in the direc...
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WO/2008/027701A1 |
An oscillator having a quartz resonator, and a base wafer containing active electronics, wherein the quartz resonator is bonded directly to the base wafer and subsequently hermetically capped.
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WO/2008/015917A1 |
Provided is an ultrasonic probe for sending/receiving ultrasonic waves. The ultrasonic probe comprises a sending inorganic piezoelectric element layer made of an inorganic material, a receiving organic piezoelectric element layer made of...
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WO/2008/010509A1 |
An ultrasound probe of multichannel array type with high S/N ratio and with a high sensitivity. The ultrasound probe has composite piezoelectric elements of transmission/reception separation type and is characterized in that the composit...
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WO/2008/001824A1 |
For the purpose of miniaturizing and supersensitizing a chip for a capacitor microphone formed by micromachining a silicone substrate, the silicone substrate of the chip for the microphone is diced in a generally hexagonal, desirably reg...
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WO/2007/125675A2 |
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WO/2007/117200A2 |
The present invention is intended as a method for producing an electromagnetic transducer of variable reluctance type, where the transducer's seismic mass side (1) and load side (2) are mounted together in a first step while the inner (1...
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WO/2007/105454A1 |
Plant for production of paper-made part for speaker (43) includes mixing unit (21), atomizing unit (22), papermaking unit (23) and shaping unit (25). The mixing unit (21) mixes raw material (31) for paper-made part for speaker with liqui...
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WO/2007/105449A1 |
A speaker-use diaphragm produced by paper-making a pulp material and then pressing it partially to reduce its thickness. The speaker diaphragm of this structure is easy to produce, has stable frequency characteristics in medium and high ...
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WO/2007/102460A1 |
Provided are an ultrasonic sensor capable of acquiring stable sending-receiving characteristics and acquiring a desired directivity in a simple and inexpensive manner, and a method for manufacturing the ultrasonic sensor. The ultrasonic ...
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