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Active anti-noise earphone

An anti-noise earphone and active noise control technology, applied in the directions of earpieces/earphone accessories, etc., can solve the problems of complex structure and unsatisfactory anti-noise effect, and achieve the effect of good anti-noise effect and simple structure

Inactive Publication Date: 2013-04-03
东莞市奥莱克电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing active anti-noise earphones have complex structures and unsatisfactory anti-noise effects

Method used

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Embodiment Construction

[0013] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0014] see figure 1 , the practical active anti-noise earphone 100 includes an earmuff 10 and an active noise control device 20 , and the active noise control device 20 is detachably arranged on the earmuff 10 .

[0015] The earmuff 10 includes a main body 12 and a ring 14 . The main body 12 is roughly hemispherical and includes a first flat surface 122 and a first curved surface 124 . A sound diffusion hole 1222 is defined on the first plane 122 . The main body 12 is filled with porous sound-absorbing material, that is, sponge, and the main body 12 is also provided with an audio signal receiving unit 30 and a speaker unit 40 . One end of the audio signal receiving unit 30 is connected to the speaker unit 40 , and the other end is used t...

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Abstract

The invention discloses an active anti-noise earphone. The active anti-noise earphone comprises earmuffs and active noise control devices; the active noise control devices are detachably arranged on the earmuffs; a voice frequency signal receiving unit and a loudspeaking unit are arranged in each earmuff; each active noise control device comprises a noise sensing unit and a noise processing unit; the voice frequency signal receiving unit is used for receiving and transmitting voice frequency signals to the loudspeaking unit which gives out the voice frequency signals; the noise sensing unit is used for detecting and transmitting environmental noises to the noise processing unit; the noise processing unit is used for outputting noise cancellation signals to the loudspeaking unit; the noise cancellation signals and outside noise signals counteract with each other; and the loudspeaking unit only transmits the voice signals received by the signal receiving unit. The active anti-noise earphone is simple in structure and has a good anti-noise effect.

Description

[0001] technical field [0002] The invention relates to an earphone, in particular to an active anti-noise earphone. [0003] Background technique [0004] As one of the three major public hazards of environmental pollution, noise pollution has attracted more and more attention. Methods to control noise pollution include starting from the sound source, improving the structural design of the sound source, reducing the noise level emitted by the sound source, or eliminating noise through sound insulation and sound absorption. There is another existing noise control technology called active noise control. The principle of active noise control is to use electronic technology and electro-acoustic devices to introduce a secondary sound wave that is equal in amplitude to the original noise sound wave and opposite in phase, so that the generated The noise and the original noise cancel each other out in a certain area, so as to achieve the purpose of noise reduction. However, the...

Claims

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Application Information

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IPC IPC(8): H04R1/10
Inventor 莫启旭
Owner 东莞市奥莱克电子有限公司
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