Sound quality adjusting method for electric appliance noise and extractor hood

Abstract

The invention relates to a sound quality adjusting method for electric appliance noise. The method comprises the following steps: acquiring a sound signal when an electric appliance works, calculatingsound pressure level data P0 of the sound signal, extracting characteristic frequency points in each frequency band in the sound signal, matching a sound combination frequency line according to the acquired sound pressure level P0 data and the characteristic frequency points of the sound signal, carrying out sound combination on the collected sound signal according to the sound combination frequency line, and outputting sound combination sound after the sound combination. According to the sound quality adjusting method for the electric appliance noise, the noise can be combined, and then moremelodious sound is output. The invention further relates to an extractor hood. The extractor hood comprises a fan frame, a fan system arranged in the fan frame, a sound collector arranged at an air inlet in the fan frame, a control circuit board arranged in the fan frame and a loudspeaker arranged on the fan frame, and the fan system, the sound collector and the loudspeaker are electrically connected with the control circuit board. The extractor hood can improve the quality of output sound.

Description

technical field [0001] The invention relates to a method for adjusting the sound quality of electrical noise, and also relates to a range hood applying the method. Background technique [0002] Since the range hood entered China in the 1990s, it has become an indispensable kitchen appliance for ordinary people. Its main function is to inhale the cooking fume generated by the user through the fan system impeller from the air inlet, use the air inlet filter and impeller to filter the fume, and discharge the filtered fume from the air outlet, thereby completing the purification of the kitchen environment. Sound is an important index to improve the user experience when the range hood is working, and it has a great impact on the overall range hood, especially under the same air volume and pressure, so it is very important to improve the sound to the user. [0003] At present, the range hoods on the market are very concerned about the indicators of air volume and pressure. With t...

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Problems solved by technology

[0003] At present, the range hoods on the market are very concerned about the indicators of air volume and pressure. With the improvement of the overall living standard, more and more users begin to shift their attention to the sound. Sound power or sound pressure is measured to determine the quality of the product's working sound. Therefore, in the prior art, various noise reduction methods are mainly used to improve the working sound of the product, and less attention is paid to the sound quality.

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