Active noise reduction method and device and cooking equipment

Abstract

The embodiment of the invention discloses an active noise reduction method which is applied to cooking equipment and comprises the following steps: acquiring a current working mode of the cooking equipment; determining the current noise wave generated by the cooking equipment in the current working mode according to the current working mode and the corresponding relationship between the working mode and the noise wave; and generating a suppressed sound source which is the same as the current noise wave in amplitude and frequency and opposite to the current noise wave in phase, and outputting the suppressed sound source so as to reduce the current noise. In the embodiment of the invention, the suppression sound source which is opposite to the source noise of the cooking equipment in phase and equal in intensity is generated and is subjected to coherence superposition with the source noise signal of the cooking equipment in space to form a silencing 'dead zone', so that the purpose of active noise reduction is achieved, and better cooking experience is brought to a user.

Description

technical field [0001] Embodiments of the present invention relate to the field of household appliances, and in particular, to an active noise reduction method, device, and cooking equipment. Background technique [0002] In recent years, with the gradual improvement of people's living standards, more and more improved cooking appliances have entered people's lives. In order to power the knives for breaking or cutting food in some current cooking electrical products, they are usually equipped with high-speed motors, such as: wall breaking machines, soybean milk machines, etc., and the high-speed rotation of high-speed motors will generate relatively loud noises. , which greatly affects the user experience. [0003] At present, for the noise generated by such cooking appliances, the noise generated by the motor during the operation of the cooking equipment is mainly considered, so that noise reduction is carried out by passive means such as sound insulation and vibration iso...

AI Technical Summary

Problems solved by technology

In order to power the knives for breaking or cutting food in some current cooking electrical products, they are usually equipped with high-speed motors, such as: wall breaking machines, soybean milk machines, etc., and the high-speed rotation of high-speed motors will generate relatively loud noises. , which greatly affects the user experience

[0003] At present, for the noise generated by such cooking appliances, the noise generated by the motor during the operation of the cooking equipment is mainly considered, so that noise reduction is carried out by passive means such as sound insulation and vibration isolation using sound-absorbing materials. However, when cooking appliances work, they are often accompanied by low-frequency noise generated when breaking or cutting food. The above-mentioned measures are not very effective in reducing low-frequency noise.

Images