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Class 381/164 - Thermal response to, or generation of, sound vibration


Subclass of Class 381 - Electrical audio signal processing systems and devices
Definition: Subject matter where sound waves either modify or are emitted
No. of patents: 26
Last issue date: 01/10/2012


NumberTitleIssue Date
8094840Thermal 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), laminated on one surface of the thermoelement layer; ...
01/10/2012
8073163Thermoacoustic 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 supported by a supporting element. The carbon nanotube film produces so...
12/06/2011
8073165Thermoacoustic 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. At least part of the one or more carbon nanotube film is supported b...
12/06/2011
8073164Thermoacoustic 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 sound by means of the thermoacoustic effect. ...
12/06/2011
8068626Thermoacoustic 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 structure includes one or more carbon nanotube films. Each carbon nanotube...
11/29/2011
8068625Thermoacoustic 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 the thermoacoustic effect. ...
11/29/2011
8068624Thermoacoustic device
A sound wave generator that includes a carbon nanotube structure. The carbon nanotube structure produces sound by means of the thermoacoustic effect. ...
11/29/2011
8059841Thermoacoustic 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 one or more drawn carbon nanotube films. The electromagnetic signal de...
11/15/2011
8050430Thermoacoustic 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 van der Waals attractive force therebetween. At least part of the so...
11/01/2011
8050431Thermoacoustic 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 one or more carbon nanotube films. Each carbon nanotube film includes ...
11/01/2011
8023668System 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 model of the loudspeaker receives the audio output signal, and models th...
09/20/2011
8019099Thermoacoustic 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 van der Waals attractive force. The one or more carbon nanotube film...
09/13/2011
8019097Thermoacoustic 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. ...
09/13/2011
8019098Thermoacoustic 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 nanotubes entangled with each other. The one or more carbon nanotube fi...
09/13/2011
8019100Thermoacoustic 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 electrical signal to the sound wave generator. The sound wave generator...
09/13/2011
7372110Display 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 device SPO1 having a laminated structure of a heat generation l...
05/13/2008
6975735Sound collecting device minimizing electrical noise
A sound collecting device is provided which is designed to minimize adverse effects on an output caused by exposure of an electroacoustic transducer to the air. The device includes an electroacoustic transducer and a vibrating circuit. The transducer is exposed to t...
12/13/2005
6944024Heat sink bracket for powered loudspeaker
A combined heat sink and mounting bracket for a powered loudspeaker of a ported reflex type is provided. The combined heat sink and mounting bracket includes a base portion, a fastener attached to the base portion for securing to a reflex tube within the enclosure a...
09/13/2005
6522756Method 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 spatial amplification characteristics. Frequency domain con...
02/18/2003
6263084Power 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 the frame. Heat generated by the power stage is thereby su...
07/17/2001
5764751Portable 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 call signal to produce a call detection signal, a transmitter...
06/09/1998
4641377Photoacoustic 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 modulated laser beam into a gas absorption chamber wherein gas ca...
02/03/1987
4503564Opto-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 element which is adapted to propagate modulated light and...
03/05/1985
4320264Loudspeaker 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 inner part of paper or plastic material having higher hea...
03/16/1982
4310731Thermal 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 a predetermined temperature, and the amplifier heats and ...
01/12/1982
4101736Device 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 loudspeaker system also includes a vibratable cone. The device ...
07/18/1978
 
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