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8135149 |
Wireless communication device
A wireless communication device includes a speaker grille, a built-in speaker provided behind the speaker grille, and an output amplifier connected to the built-in speaker. A voltage applied to the...
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8107662 |
Porting
A ported electroacoustical device uses the action of the port to provide cooling airflow across a heat producing device. The device includes a loudspeaker enclosure including a first acoustic port,...
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8094840 |
Thermal sound generating device
A thermoacoustic generating apparatus (1) is for generating acoustic waves by temperature modulation of solids, and is provided with: a thermoelement layer (12); a first electrode layer (11),...
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8073163 |
Thermoacoustic device
A sound wave generator includes a carbon nanotube film. The carbon nanotube film comprises a plurality of carbon nanotubes entangled with each other. At least part of the carbon nanotube film is...
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8073164 |
Thermoacoustic device
A sound wave generator includes a carbon nanotube structure. The carbon nanotube structure includes one or more drawn carbon nanotube films. The one or more drawn carbon nanotube films produce...
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8073165 |
Thermoacoustic device
A sound wave generator includes one or more carbon nanotube film. The carbon nanotube film includes a plurality of carbon nanotubes joined end to end by van der Waals attractive force therebetween....
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8068624 |
Thermoacoustic device
A sound wave generator that includes a carbon nanotube structure. The carbon nanotube structure produces sound by means of the thermoacoustic effect.
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8068626 |
Thermoacoustic device
An apparatus, the apparatus includes an electromagnetic signal device; a medium; and a sound wave generator. The sound wave generator includes a carbon nanotube structure. The carbon nanotube...
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8068625 |
Thermoacoustic device
A sound wave generator includes a carbon nanotube structure. At least part of the carbon nanotube structure is supported by a supporting element. The sound wave generator produces sound by means of...
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8059841 |
Thermoacoustic device
An apparatus includes an electromagnetic signal device, a medium, and a sound wave generator. The sound wave generator includes a carbon nanotube structure. The carbon nanotube structure includes...
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8050430 |
Thermoacoustic device
A sound wave generator includes one or more carbon nanotube films. The carbon nanotube film includes a plurality of carbon nanotubes substantially parallel to each other and joined side by side via...
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8050431 |
Thermoacoustic device
An apparatus includes an electromagnetic signal device, a medium, and a sound wave generator. The sound wave generator includes a carbon nanotube structure. The carbon nanotube structure includes...
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8023668 |
System for predicting the behavior of a transducer
A system for compensating and driving a loudspeaker includes an open loop loudspeaker controller that receives and processes an audio input signal and provides an audio output signal. A dynamic...
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8019098 |
Thermoacoustic device
A sound wave generator includes a carbon nanotube structure. The carbon nanotube structure includes of one or more carbon nanotube films. Each carbon nanotube film includes a plurality of carbon...
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8019097 |
Thermoacoustic device
A sound wave generator includes one or more carbon nanotube wire structures. The one or more carbon nanotube wire structures produce sound by means of the thermoacoustic effect.
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8019100 |
Thermoacoustic device
An apparatus includes a signal device, a power amplifier, and a sound wave generator. The power amplifier is electrically connected to the signal device. The power amplifier outputs an amplified...
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8019099 |
Thermoacoustic device
A sound wave generator includes one or more carbon nanotube films. The carbon nanotube film includes a plurality of carbon nanotubes substantially parallel to each other and joined side by side via...
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7881157 |
Pressure wave generator and production method therefor
A pressure wave generator is provided, which has excellent output stability over time. This pressure wave generator comprises a substrate, a heat generating layer, and a heat insulating layer...
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7474590 |
Pressure wave generator and process for manufacturing the same
Even when compression stress is generated because a volume of a thermal insulation layer 2 is expanded due to oxidized by oxygen in the air, occurrence of cracks and fractures of the thermal...
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7372110 |
Display with integral sound wave generation device
A display housing a sound element and a driving circuit that may be built in on the same substrate as the display panel. Thin-film transistors PTFT constituting pixels and a sound wave generation...
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6522756 |
Method for shaping the spatial reception amplification characteristic of a converter arrangement and converter arrangement
So as to shape the spatial amplification characteristic of an acoustical to electrical converter arrangement at least two sub-arrangements (I, II) of converters are provided, generating different...
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6263084 |
Power amplifier and loudspeaker frame integration
An integrated amplifier and speaker system includes a speaker having a motor assembly and a frame. A power stage of the amplifier is mounted in thermal communication with the motor assembly and/or...
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5764751 |
Portable telephone set with a vibrator having an automatic switching function
In a portable telephone set comprising a receiver for generating an audible tone, a vibrator for vibrating the portable telephone set mechanically, and a radio section for receiving an incoming...
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4641377 |
Photoacoustic speaker and method
A photoacoustic speaker and method for producing photoacoustic sound by utilizing a laser beam, modulating the intensity of the laser beam in response to audio signal inputs and passing the...
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4503564 |
Opto-acoustic transducer for a telephone receiver
A sound producing diaphragm of low density, low heat capacity, a large coefficient of thermal expansion and a large Young's modulus is located adjacent the end of an optical fiber transmission line...
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4320264 |
Loudspeaker with a heat resistant two-part diaphragm
A loudspeaker is disclosed in which the frustoconical diaphragm is formed in two parts, including a first or outer part made of synthetic material e.g. polypropylene or polystyrene, and a second or...
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4310731 |
Thermal motion transducer
A source of driving signals is coupled to a thermal transducer wire to provide a completed circuit. The source may include a DC bias supply and an audio amplifier. The bias supply heats the wire to...
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4101736 |
Device for increasing the compliance of a speaker enclosure
The present invention is a device for use in combination with a loudspeaker system, that includes a speaker enclosure, in order to effectively enlarge the volume of the speaker enclosure. The...
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3407273 |
Thermoacoustic loudspeaker
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3213208 |
Electric to sonic transducer
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