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With the frequent appearance of words such as PM2.5 and smog in the eyes of ordinary people, a related home appliance product-air purifier began to attract consumers' attention.
As home appliances that may need to run for a long time, the noise level of the air purifier during working hours also needs special attention. If it is used in a quiet environment such as a bedroom, a noisy air purifier is likely to disturb the user. Rest, this is obviously unacceptable.
Taking the hearing of ordinary people as an example, 20 to 40 decibels (dB) is like whispering and relatively quiet, 40 to 60 decibels (dB) is equivalent to ordinary indoor conversation, and 60 decibels (dB) or more belong to the category of noisy , Being in the noise for a long time will affect people's physical and mental health. In the case of air purifiers with different air volume settings, the size of the operating sound is different.
