Voice processing system and method and intelligent fume hood system based on active noise reduction

A voice processing and active noise reduction technology, applied in the field of noise reduction, can solve the problems of limited physical noise reduction effect and inconvenient settings, and achieve the effect of improving accuracy and recognition efficiency, improving accuracy, and accurate noise analysis.

Active Publication Date: 2020-12-29
AVIC HUADONG OPTOELECTRONICS (SHANGHAI) CO LTD
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Problems solved by technology

Physical noise reduction is limited and difficult to set up

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  • Voice processing system and method and intelligent fume hood system based on active noise reduction
  • Voice processing system and method and intelligent fume hood system based on active noise reduction
  • Voice processing system and method and intelligent fume hood system based on active noise reduction

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[0055] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0056] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0057] Such as figure 1 As shown, a voice processing system based on active noise reduction is suitable for the exhaust fan environment, including a voice collection module 100 , an exhaust fan para...

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Abstract

The invention discloses a voice processing system and method and an intelligent fume hood system based on active noise reduction. The system comprises a voice collection module, an exhaust fan parameter obtaining module, a noise reduction module and a voice reconstruction module, wherein the voice collection module is used for collecting voice and converting the voice into a digital signal; the exhaust fan parameter obtaining module is used for obtaining the rotating speed of an exhaust fan; the noise reduction module is used for obtaining noise signals of the exhaust fan and converting the noise signals into noise reduction signals, the noise reduction module is used for receiving output data of the exhaust fan parameter obtaining module, fundamental frequency and sound pressure are obtained through calculation in combination with the number of blades of the exhaust fan, the diameter of an impeller and power, and therefore the noise signals are obtained; and the voice reconstruction module is used for superposing the noise reduction signals and output signals of the voice collection module to obtain a reconstruction signal. According to the system, the noise signal of the exhaustfan is obtained by directly measuring the rotating speed of the exhaust fan and combining the number of the blades of the exhaust fan, the noise analysis is accurate, and the noise reduction accuracyand the noise reduction effect in the exhaust environment using the exhaust fan are improved.

Description

technical field [0001] The invention relates to the technical field of noise reduction, in particular to a voice processing system and method based on active noise reduction and an intelligent fume hood system. Background technique [0002] With the continuous development of technologies such as artificial intelligence and voice recognition, intelligent technologies are constantly being added to electrical operations. By adding a voice recognition module in the electrical appliance, users can complete corresponding operations through voice commands. When using an electrical appliance that includes an exhaust fan, the rapid rotation of the exhaust fan often produces relatively large noises, so that the microphone cannot accurately collect the instructions issued by the user to complete the corresponding operation. [0003] At present, most electrical appliances on the market use physical methods to reduce the impact of exhaust fan noise, and reduce the impact of exhaust fan ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B15/02B08B13/00
CPCB08B13/00B08B15/023
Inventor 马翼平许召辉黄文君陈年生范光宇饶蕾周圣杰
Owner AVIC HUADONG OPTOELECTRONICS (SHANGHAI) CO LTD
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