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US 8,208,661 B2Granted
Headphone
AssigneesTsinghua University, Hon Hai Precision Industry Co., Ltd.
InventorsKai-Li Jiang, Lin Xiao, Zhuo Chen, Shou-Shan Fan
Life of this patent
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Abstract
An apparatus includes a headphone. The headphone includes at least one housing; and at least one sound wave generator disposed in the housing. The sound wave generator includes at least one carbon nanotube structure.
Claims19
An apparatus comprising:
- a headphone, the headphone comprising:
- at least one housing;
- and
- at least one sound wave generator disposed in the at least one housing, the at least one sound wave generator comprising at least one carbon nanotube structure, the at least one carbon nanotube structure is capable of producing sound by a thermoacoustic effect;
- wherein the at least one carbon nanotube structure is capable of producing sound in response to an electrical signal, the electrical signal is capable of causing the at least one carbon nanotube structure to increase in temperature;
- the carbon nanotube structure is in contact with a medium and is capable of transmitting heat to the medium.
3 more elements
An apparatus comprising:
- a headphone, the headphone comprising:
- at least one housing;
- and
- at least one sound wave generator disposed in the at least one housing, the at least one sound wave generator comprising at least one carbon nanotube structure,
- wherein the at least one carbon nanotube structure is capable of producing sound by receiving an electrical signal and converting the electrical signal into heat to increase a temperature in a medium in contact with the carbon nanotube structure.
2 more elements
Dependencies are inferred from the claim text.