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WO/2014/190970A1 |
The invention relates to a vibration sensor, particularly a microphone or hydrophone, having a first resonance element and a first optical interferometer which comprises a first measuring path and a first reference path, wherein the firs...
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WO/2014/152438A2 |
A suspended nanotube film (or films) producing sound by means of the thermoacoustic (TA) effect is encapsulated between two plates, at least one of which vibrates, to enhance sound generation efficiency and protect the film. To avoid the...
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WO/2014/068552A1 |
A system for detection of speech related acoustic signals by using laser based detection that includes a mask configured for being worn over a face part of a speaker covering the speaker's mouth, where the mask includes at least one refl...
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WO/2014/066448A1 |
Embodiments disclosed herein include a device with an integrated acoustics function that includes a patterned touch screen cover, an acoustic thin film, a plurality of electrodes, and a substrate. In some embodiments, the substrate is co...
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WO/2014/041605A1 |
[Problem] To provide an enclosed speaker system that can reduce the internal/external pressure difference of a speaker cabinet without a complicated operation and without causing a decrease in reproduced sound quality or an increase in c...
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WO/2014/030192A1 |
Provided is a silica porous body in which multiple silica particles (2) are three-dimensionally connected, the density of the silica porous body being less than 220 kg/m3, the particle size of the silica particles (2) being 3.5 nm or mor...
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WO/2013/150326A1 |
Passive wireless microphone is proposed which consisting of: passive microphone unit, consisting of: condenser microphone; connected to a high Q-factor surface acoustic wave (SAW) device, such as a SAW or STW resonator; the membrane of t...
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WO/2013/089180A1 |
This acoustic wave generating device has: a thermally conductive substrate; a heat insulating layer formed on one principal surface of the substrate; and a heating element film formed over the heat insulating layer, and comprising an ele...
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WO/2013/069865A1 |
The present disclosure relates to a reverse-type hybrid acoustic/electric converting device, and an overall product structure of a general reverse-type acoustic/electric converting package is improved to
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WO/2013/061578A1 |
The optical microphone disclosed in the present application is provided with a photoacoustic medium unit (2) which has one pair of main surfaces (2a and 2b) and at least one side surface located between the one pair of main surfaces, a r...
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WO/2013/032821A1 |
This disclosure provides systems, methods and apparatus for sense elements in an electromechanical microphone device. In one aspect, a piezoelectric sense element may include a glass substrate, electrode layers, piezoelectric layers, and...
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WO/2013/032820A1 |
This disclosure provides systems, methods and apparatus for glass-encapsulated microphones. In one aspect, a glass-encapsulated microphone may include a glass substrate, an electromechanical microphone device, an integrated circuit devic...
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WO/2013/027373A1 |
The optical microphone disclosed in the present application is an optical microphone which detects acoustic waves propagating through an environmental fluid using light waves. The optical microphone is provided with an acoustic receiving...
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WO/2013/010398A1 |
A flexible and transparent acoustic apparatus (20) is provided. The flexible and transparent acoustic apparatus (20) comprises: a thermoacoustic element, comprising a flexible and transparent substrate (26), at least one conductive film ...
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WO/2012/166077A1 |
The invention relates to the field of acoustics and is designed to create sound waves in a gaseous (air) medium, and can be used to create acoustic waves, including waves that are audible to the human ear, for domestic and industrial pur...
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WO/2012/163681A1 |
A device comprising measurement (7) and reference (3) interferometers is disclosed. Each interferometer is configured to receive light from the same light source (1) and to emit light to respective detectors (6) and has a respective oper...
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WO/2012/154238A1 |
Apparatus is provided featuring an acoustic driver and a transducer. The acoustic driver is configured to provide an acoustic driver signal having a frequency that can be adjusted to yield a given wavelength, which in turn, will selectiv...
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WO/2012/137482A1 |
An optical microphone is provided with: a light source (4); a first polarizer (5) for passing the straight polarization light from among the light beams emitted from the light source (4); a second polarizer (8) having a polarization plan...
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WO/2012/126983A1 |
The invention relates to an optoacoustic transducer (12) for converting underwater sound waves (14) into a modulated optical signal (E), comprising an optically effective component (16) which can be impinged with light (S) and underwater...
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WO/2012/127808A1 |
An optical microphone is provided with a propagation medium unit through which an acoustic wave propagates, a light source which emits a light wave that crosses the acoustic wave propagating through the propagation medium unit and is tra...
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WO/2012/121533A2 |
The present invention concerns a composite speaker system comprising: a cone-shaped speaker which receives a sound-playback signal and plays back the sound, and has a recessed part in the front surface thereof; and a distributed mode spe...
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WO/2012/060102A1 |
A porous silica body (5) in which silica particles (6) are three dimensionally connected has through holes containing first pores having a smaller mean free path than air and second pores larger than the first pores, and has a density of...
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WO/2012/029236A1 |
The present invention is an optical microphone for detecting acoustic waves that are propagated through an environmental fluid. The optical microphone comprises: a propagation medium unit (1); an optical source (2) for emitting light wav...
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WO/2011/149222A2 |
This disclosure is directed to implementing a measure of additionally including and installing a load register connected to a circuit chip in a printed circuit board so that the corresponding circuit chip may normally obtain and receive ...
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WO/2011/145025A1 |
A microphone comprises a planar substrate arrangement, an optical source provided over the substrate arrangement for emitting a light beam in a direction parallel to the substrate arrangement and a layer structure defining at least one o...
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WO/2011/083760A1 |
Disclosed is an optical microphone, comprising a light source (1) that outputs a monochromatic light; a two-beam interferometer (3) that divides the monochromatic light that is outputted from the light source (1) into two light beams, co...
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WO/2011/077683A1 |
Disclosed is an electroacoustic transducer provided with: a vibrating membrane (21) which has a piezoelectric element; a magnetic circuit (20) which generates a magnetic force on the basis of a first electric signal, and which vibrates t...
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WO/2010/150660A1 |
Provided is a method for producing a vibrating membrane unit (1) used for a microphone, the vibrating membrane unit being provided with: a tubular support member (11) made of resin, which opens in at least one side in an axial direction ...
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WO/2010/143380A1 |
A sound wave generator which has better output characteristics than those in the past is provided based on a base layer and insulating layer combination which could not be predicted in the past. The sound wave generator is provided with ...
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WO/2010/116398A1 |
An extremely broadband optical ultrasonic microphone is composed of an acoustic waveguide (6) for transmitting an acoustic wave received from an opening (4), an optoacoustic propagation medium (2) for forming at least part of the wall su...
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WO/2010/103194A2 |
The invention relates to an eCRT electronic component that belongs to a new generation due to the high resolution thereof for sensing electromagnetic information, and that makes it possible to process the generation of self-induced curre...
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WO/2010/103193A2 |
Balancing problems are mechanical force interactions that generate electron fluctuations according to stable and known relations, elastic deformation of materials and piezoelectric effects. In the field of traditional mechanics that fact...
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WO/2010/092197A1 |
The system consists of means (11, 12) for converting signals corresponding to the DMX-512 lighting protocol into command signals which can be understood by an audio block (3) such that at least some of the controls of a light control ele...
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WO/2010/061060A1 |
A sound source based on the thermoacoustic effect comprising a substrate (1) having a front side and an opposite back side, and at least one conductor (2) on the front side of the substrate (1), said conductor (2) comprising a middle par...
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WO/2010/029509A1 |
A device (100) for converting an acoustic signal (102) into an electric signal (104), wherein the device (100) comprises an interferometer (106) comprising two mirrors (108) adapted for reflecting electromagnetic radiation (112) coupled ...
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WO/2009/152549A1 |
A headset including first and second ear assemblies, each ear assembly including a rear limb, a front limb, a transducer carried on the front limb, and an earpiece extending from the front limb. The rear limb is configured to locate behi...
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WO/2009/136012A1 |
The setting up of the electron reorganization calls on priority of the various PCT documents filed. The present application relates to the chemical reactions of components before and after the reactions, which release residues, unburnt s...
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WO/2009/022658A1 |
It is possible to provide an ultrasonic detection device, an ultrasonic detection method, and an atomic power plant nondestructive inspection method which can effectively generate ultrasonic waves of sufficient intensity and can perform ...
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WO/2008/126437A1 |
Ultrasonic inspection equipment which is made compact by using laser light while preventing deterioration or deformation of a specimen and can perform good inspection over a wide range. The ultrasonic inspection equipment (1) comprises a...
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WO/2008/111961A2 |
An air filter apparatus and method for a land vehicle is disclosed wherein sound waves are directed onto the filter element of the filter device to dislodge particulate matter without the need to disassemble the air filter device.
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WO/2008/089853A1 |
A loudspeaker system, and a method and device for actuating a loudspeaker, using a loudspeaker element connected to a memory metal part and provided in a portable electronic device; and a power source unit configured to supply power to t...
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WO/2008/076929A1 |
A micromachined microphone or speaker embedded within, or positioned on top of, a substrate suitable for carrying microelectronic chips and components. The acoustic element converts sound energy into electrical energy which is then ampli...
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WO/2008/029451A1 |
A thermal sound generating device (1) for generating sound wave by the temperature modulation of a solid comprises a thermoelectric element layer (12), a first electrode layer (11) laminated on one surface of the thermoelectric element l...
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WO/2008/015664A2 |
A compact optical video disc player, the compact optical video disc player includes: (i) multiple optical heads (12(1)-12(N)) adapted to read multiple optical video discs; (ii) multiple servos ( 14( 1 )- 14(N)) coupled to the multiple op...
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WO/2008/000007A1 |
An electroacoustic transducer comprising a laser source A and a photoreceiver H, wherein a sound field S is provided, which can be used to modulate the propagation velocity of the laser beam in accordance with the acoustic pressure as th...
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WO/2007/143362A2 |
An apparatus and method for detecting multiple beams from a beamsplitter is disclosed. Some embodiments of the present invention are particularly well-suited for use in microphones, high-sensitivity pressure sensors, vibration sensors, a...
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WO/2007/138886A1 |
A hybrid actuator (100A) comprises a magnetostriction actuator (110) having a magnetostriction element (111), and a moving coil actuator (130) where voice coils (131a, 131b) are fixed to the outer circumference of a movable portion (132)...
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WO/2007/117941A1 |
An optical displacement sensor is disclosed that provides a optical displacement sensor that includes a optically-resonant cavity tuned to an operating wavelength without some of the disadvantages for doing so in the prior art. An embodi...
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WO/2007/100957A1 |
An optical displacement sensor is disclosed that provides a high signal-to-noise ratio output signal without some of the disadvantages for doing so in the prior art. An embodiment of the present invention directs a light beam toward a Fa...
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WO/2007/056827A1 |
A hydrophone (10) for immersion in a liquid body defining a pressure is disclosed The hydrophone (10) includes a sensor (11) for providing an electrical signal indicative of the pressure; and a transducer (12) electrically connected to t...
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