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JP4384976B2 |
The invention relates to a tactile device provided with a number of fluid elements (1) containing an electrically conducting fluid (3, 4). The fluid level in each element is movable by actuator means (V, 6) applying a electric power to s...
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JP2009542128A |
An acoustoelectric transducer comprising a laser source A and a light receiver H, wherein a soundfield S is provided by which the propagation velocity of the laser beam may be modulated according to the sound pressure while it traverses ...
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JP2009272978A |
To provide a stable flexible speaker which can be formed in any desired shape by using a flexible film-like sounding body and has no significant change in the frequency characteristics, even if it is inflected.The flexible speaker consis...
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JP2009253493A |
To provide an ultrasonic sensor and an ultrasonic sensor array simultaneously achieving higher sensitivity and wider band and facilitating formation of an array by ensuring both mechanical and optical sensitivities, and to provide an ult...
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JP2009250928A |
To make it possible to detect a particle velocity of medium which propagates sound wave over the frequency band wider than before, and to provide a MEMS type thermal beam type particle velocity detection element which can secure design f...
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JP4347885B2 |
It becomes possible to obtain high sound pressure in a high frequency domain by a capacitive ultrasonic transducer which comprises a membrane 9 on which one electrode 7 is formed, a cavity 13 constructed in its backface, and a substrate ...
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JP2009219089A |
To provide a manufacturing method of a sound wave generation device which can be formed so as to have a large area and to be inexpensive by deposition using application without limiting a substrate to silicon.A fluid material including p...
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JP4332850B2 |
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JP2009188703A |
To provide a sound production method for generating sound waves without generating sound waves from a plate surface of a diaphragm, and a speaker utilizing the same.A flow path 20 has an air inlet 22 and an air outlet 24. A micro-pump 28...
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JP4318220B2 |
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JP4285361B2 |
An electro-optical device with a sound generating body is disclosed, in which an electro-optical device and a sound generating body can be mounted compactly and which can eliminate necessity of acoustic design of the sound generating bod...
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JP2009128170A |
To obtain directional characteristics in vibration detection, without having to depend on electrical addition.This vibration detection device is equipped with a Michelson interferometer, constituted to include a first vibration film 151 ...
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JP4277653B2 |
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JP4269867B2 |
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JP4270036B2 |
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JP4264667B2 |
A vibration detection device that includes a light source that emits a laser beam; an interferometer, which includes two vibrating bodies that are capable of reflecting the laser beam, that splits the laser beam to cause interference pat...
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JP4266171B2 |
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JP2009085868A |
To provide a high-sensitive optical ultrasonic microphone capable of measuring sound pressure up to an ultrasonic range.This optical ultrasonic microphone comprises an acoustic waveguide 6 for taking and propagating sound wave from an op...
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JP4255173B2 |
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JP4249875B2 |
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JP4251052B2 |
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JP2009512232A |
A system and method for detecting a sound originating from a body and enhancing signal-to-noise ratio with respect to noise originated outside the body is disclosed. The system comprises a light source for producing a quasi-monochromatic...
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JP4221792B2 |
A loudspeaker apparatus includes a modulator for frequency-modulating an audio signal to a signal of a frequency band and an ultrasonic generating device adapted to be driven by the output signal of the modulator. The modulator frequency...
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JP4220219B2 |
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JP2009021852A |
To provide an ultrasonic wave transmitter which has a wide band and can transmit a high-energy ultrasonic wave into the air.This ultrasonic wave transmitter includes: an acoustic tube 2 with a space wherein an ultrasonic wave is propagat...
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JP2009005144A |
To provide a sound collecting apparatus collecting the sonic waves while improving a detection efficiency of sonic waves.A sound collecting apparatus 1 comprises: a horn unit 3 including a horn body formed into a hollow tubular shape whe...
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JP2008547300A |
A thermo-acoustic transducer device (8) comprises a substantially hollow body (10) in which a thermo-acoustic element (11) is accommodated, and a heating control unit (2) coupled to the thermo-acoustic element (11) for controlling the te...
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JP2008544867A |
The device (100) comprises a substrate (10) of a semiconductor material with a first and an opposite second surface (1,2) and a microelectromechanical (MEMS) element (50) which is provided with a fixed and a movable electrode (52, 51) th...
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JP4181748B2 |
A folded Sagnac fiber optic acoustic sensor array operates in a manner similar to a Sagnac interferometer but uses a common delay path to reduce distributed pickup in downlead fibers. The fiber optic acoustic sensor array is used to dete...
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JP4184265B2 |
A folded Sagnac fiber optic sensor array uses a common delay path to reduce distributed pickup in downlead fibers. The sensor array is used to detect perturbations (e.g., acoustic waves in water). By basing the folded Sagnac sensor array...
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JP4184266B2 |
A folded Sagnac fiber optic sensor array uses a common delay path to reduce distributed pickup in downlead fibers. The sensor array is used to detect perturbations (eg., acoustic waves in water). By basing the folded Sagnac sensor array ...
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JP2008275515A |
To provide a vibration detector capable of improving detection sensitivity when optically detecting vibration.A laser beam Lout from a light source 10 is separated into two optical paths (a reference optical path and a reflecting optical...
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JP2008268047A |
To suppress noise contained in wave motion for interference to be a minimum extent and to make the detection performance of an interferometer improved.This vibration detecting device is constituted by constituting two interferometers con...
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JP2008261684A |
To provide a vibration detecting apparatus capable of improving detection sensitivity when optical detection of digital vibrations is performed.A laser beam Lout from a laser light source 10 is made to separately travel through two optic...
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JP2008258928A |
To provide a microphone capable of detecting vibrations about sound with high sensitivity.The microphone 1A is provided with a diaphragm 2 for receiving sound pressure to vibrate, a diffraction grating piece 30A attached to a bobbin 21 i...
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JP2008233043A |
To provide an acoustic vibration detector capable of detecting acoustic vibration using an optical microphone and detecting acoustic vibration by rotating the detection direction of sound limitlessly.The acoustic vibration detector compr...
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JP4159463B2 |
Various sensors use an electro-active device ( 11 ) electrically connected to a detector circuit. The electro-active device ( 11 ) comprises an electro-active structure in the form of a continuous electro-active member ( 12 ) curving in ...
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JP2008228016A |
To obtain a capacitor headphone reduced in size and weight by obtaining a high-voltage sound signal, without having to use step-up transformers.The capacitor headphone has a capacitor type electroacoustic transformation unit generating s...
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JP2008228248A |
To provide a loudspeaker, where mechanical strength is high at a drive section, a risk such as burnout by heat generation and breakdown, is canceled, and a sound tube is provided on a sounding side.The loudspeaker 10 has the sound tube 1...
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JP4156520B2 |
A transducer comprising an acoustic energy generating means and a resonator. The acoustic energy generating means generates acoustic energy and is adapted for delivering an approximately uniform amount of acoustic energy to each unit of ...
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JP2008206122A |
To solve the problems that, though an ion cooler can be turned to a small-sized ion speaker by combining existing technologies, by the ion speaker by the method, even when sound can be generated, it is limited to emission in a single dir...
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JP2008202959A |
To provide a vibration detecting device that optically performs digital vibration detection and allows miniaturization of the device.A laser beam Lout from a light source 10 is divided into two optical paths (first and second optical pat...
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JP2008175642A |
To provide a vibration detecting device capable of vibration detection of high accuracy.A first coil 36 is wound around a first magnet 37, and moreover changes its position according to the displacement of a diaphragm 34 via a first unit...
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JP2008167252A |
To provide a thermal excitation type sound wave generator capable of efficiently generating sound waves in an audible frequency bands with frequency lower than in the conventional case.In the sound wave generator 10 having a thermally-co...
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JP4116353B2 |
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JP2008154226A |
To provide a vibration detecting apparatus capable of outputting a digital vibration detection signal with a simple construction.The apparatus includes a -modulator using variation of a diffraction angle of laser light L caused by displa...
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JP4112505B2 |
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JP2008144647A |
To easily increase action speed in shape memory wire without generating noise.Shape memory wire 1 characterized by fixing heat radiation members 5 having greater heat capacity than shape memory alloy on a wire main body 3 of wire made ou...
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JP2008521330A |
Provided is a hybrid speaker including a vibration diaphragm having a conductive coating layer formed by coating a conductive material for forming an electrode on a surface of a polymer film and an aerogel layer formed by coating aerogel...
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JP4100415B2 |
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