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JP2011223373A |
To provide a sound generation device with a simple structure and reduced thickness which can generate sufficient sound volume.A sound generation device 100 comprises: an electrode part 110 having an electrode 111 and an electrode 112 arr...
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JP2011223460A |
To generate a sound wave faithful to a sound signal to be converted by a device that generates a sound making good use of a thermally induced sound wave radiation element, while suppressing driving electric power of the thermally induced...
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JP4806739B2 |
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JP2011211311A |
To provide an optical ultrasonic microphone that can measure sound pressure over a wide band up to an ultrasonic region, and has a small size, high sensitivity, and resistance to a change in environment.The optical ultrasonic microphone ...
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JP2011205171A |
To solve a problem wherein a condenser microphone or the like, included in conventional ultrasonic receivers, uses a diaphragm in principle, and thereby a frequency band is limited.This ultrasonic receiver is equipped with: a waveguide h...
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JP4776231B2 |
An apparatus including sensors that aid in the location of a stylus within the groove of a rotating record. The location of the stylus corresponds to a portion of an audio waveform present at a unique location within the groove. Using th...
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JP2011171790A |
To solve a problem that all conventional speaker systems are constituted to reproduce sound waves by generating a change in a temperature of air around a heat source, however, any of the conventional speaker systems does not reproduce su...
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JP4754360B2 |
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JP4742907B2 |
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JP4718103B2 |
Part of the (synthetic material) substrate (8) of a display is combined with a light source, e.g. a LED (14) and a photodetector (20) to be used as an optical microphone. A membrane (11) is formed which deforms due to air pressure fluctu...
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JP4688977B2 |
A sound wave generator that exhibits more excellent output properties than conventional ones, based on the combination of a base layer and a heat-insulating layer that cannot be expected from conventional techniques is provided. The soun...
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JP4687446B2 |
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JP2011087460A |
To provide a device for performing thermodynamic work on the fluid like a pump (340), a compressor, or a fan.The thermodynamic work may be used to provide a driving force for moving the fluid. Work performed on the fluid may be transmitt...
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JP4672783B2 |
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JP4674138B2 |
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JP4672787B2 |
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JP4657225B2 |
To provide an air flow speaker which generates high grade voice. The air flow speaker 1 concerning the present invention is provided with: an air flow generation means 2 for generating air flow; an air flow passage 3 through which the ai...
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JP4649889B2 |
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JP4649929B2 |
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JP2011035681A |
To provide a new "magnetic coupling type speaker" and a speaker system driving the speaker by a digital signal.The speaker 100 has: a stepping motor 110 which is driven on the basis of a voice signal; a rotor 120 which is fixed to a rota...
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JP2011035647A |
To provide a displacement detector with a low noise level and high sensitivity with a simple configuration.A metal layer 14 supported so as to be displaced (vibrated) and a metal layer 24 provided to the surface of optical glass 23 are a...
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JP4617803B2 |
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JP4617710B2 |
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JP4614181B2 |
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JP4611167B2 |
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JP2010258357A |
To improve transmission/reception efficiency without changing a distance to a material, in a meander coil.The meander coil includes: a first conductor group composed by bundling a plurality of conductors for carrying currents in the same...
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JP2010245599A |
To provide an optical microphone having flat frequency characteristics up to a high-frequency region.The optical microphone includes a prism 2, a metal layer 3, a sound reception layer 4, a light source 5, a light receiver 6, a light sou...
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JP4565093B2 |
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JP4555387B2 |
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JP4555384B2 |
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JP2010206785A |
To provide a thermoacoustic device, especially which uses carbon nanotubes.The thermoacoustic device includes a signal device, a power amplifier, and a sound wave generator which includes a carbon nanotube structure. The power amplifier ...
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JP4534751B2 |
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JP4534625B2 |
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JP4525273B2 |
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JP4513546B2 |
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JP2010161271A |
To provide a means of preventing a decrease in bonding strength between a base and a cover which constitute the semiconductor package to be mounted on an electronic equipment substrate. The semiconductor package includes the base 11, a c...
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JP4508862B2 |
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JP4505672B2 |
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JP4502267B2 |
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JP4491081B2 |
A mathematical formula is followed for the constraints which involves a pure delay and reduction of the incoherent noise level, providing improved near field performance.
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JP2010141858A |
To surely maintain plasma of a quantity required for discharge for generating sound pressure, and to carry out discharge with low power. This sound generator includes a first switch, and a second switch driven by logic opposite to that o...
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JP2010136368A |
To provide a thermoacoustic device, specifically, the thermoacoustic device utilizing a carbon nanotube. This device includes: a signal device; and a sound wave generator including a carbon nanotube structure. At least a part of the carb...
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JP4466231B2 |
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JP2010098461A |
To provide a flat speaker whose vibrating body is hardly damaged from outside.The pin 61 of a solenoid 60 moves when the current value of an acoustic signal changes, and a second magnet plate 52 moves in an X-axis direction. Repulsive fo...
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JP4454696B1 |
An optical ultrasonic microphone includes an acoustic waveguide that transmits a sound wave received from an opening, an optical acoustic propagation medium that forms at least one portion of a wall face of the acoustic waveguide and an ...
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JP4413433B2 |
A method of reproducing audio sound using low level electromagnetism applied to ambient air particles to create a new magnetic field. The method uses a device having at least one winding of electric wires that re wound onto a flexible po...
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JP4401958B2 |
There is described a micromachined ultrasonic transducers (MUTS) and a method of fabrication. The membranes of the transducers are fusion bonded to cavities to form cells. The membranes are formed on a wafer of sacrificial material. This...
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JP4396513B2 |
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JP4388603B2 |
A sonic actuator including a multi-layer membrane having a non-metallic elastomeric dielectric polymer layer with a first surface and a second surface, a first compliant electrode layer contacting the first surface of the polymer layer, ...
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JP4385990B2 |
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