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Range hood noise reduction control method and system and range hood

A control method and oil fume technology, applied in the direction of sounding equipment, instruments, etc., can solve the problems of low working efficiency of the overall system, poor noise reduction effect, etc., and achieve the effect of improving response speed and adaptability, improving processing capacity, and increasing mobility.

Pending Publication Date: 2020-12-11
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology

[0004] The present invention proposes a range hood noise reduction control method, system and range hood, which solves the problems of poor noise reduction effect and low overall system working efficiency existing in the range hood noise reduction control method

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  • Range hood noise reduction control method and system and range hood
  • Range hood noise reduction control method and system and range hood
  • Range hood noise reduction control method and system and range hood

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Embodiment Construction

[0050] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0051] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this invention belongs. It should also be understood that terms, such as those defined in commonly used dictionaries, should be understood to have meanings consistent with the meanings in the co...

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Abstract

The invention provides a range hood noise reduction control method and system and a range hood. The method comprises the steps of detecting a primary noise signal generated by the range hood; performing signal processing on the primary noise signal to obtain a noise reference electric signal; calculating a secondary sound source electric signal corresponding to the noise reference electric signalby adopting an FxLMS algorithm; performing signal processing on the secondary sound source electric signal to obtain a secondary noise signal; and outputting the obtained secondary noise signal to besuperposed with the primary noise signal to realize noise reduction control. According to the method, secondary channel identification is added into an adaptive control algorithm, so that the processing capacity of background noise of an active noise reduction system is effectively improved, the controllability is high, the uncertainty caused by broadband noise of the range hood can be effectivelycoped with, the response speed and the strain capacity of the system are improved, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of household appliances, in particular to a noise reduction control method and system for a range hood and a range hood. Background technique [0002] With the improvement of people's material living standards, the range hood has become a necessary product for home life, and the noise it produces is endangering people's physical and mental health. In order to solve the noise problem, current range hoods mainly use passive noise reduction methods to reduce high-frequency noise. Passive noise reduction methods can be such as sound absorption and noise reduction, sound insulation and noise reduction, muffler noise reduction, and vibration isolation. However, This passive noise reduction method cannot eliminate low-frequency noise, and low-frequency noise needs to be realized by active active noise reduction technology. [0003] In order to solve the problems existing in the passive noise reduction method, the ...

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Application Information

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IPC IPC(8): G10K11/178
CPCG10K11/17813G10K11/17817G10K11/17873
Inventor 肖彪王重刘智亮李彬朱丽平
Owner GREE ELECTRIC APPLIANCES INC
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