The standard use of noise is noise. From a physiological perspective, any sound that interferes with people's rest, study, and work, as well as the sound that people want to hear, that is, unwanted sound, is collectively referred to as noise. When noise has a negative impact on people and the surrounding environment, it forms noise pollution. In physics, noise refers to all irregular signals (not necessarily sound), such as electromagnetic noise, thermal noise, radio transmission noise, laser noise, fiber optic communication noise, camera image noise, etc
Relevant Standards
In China, relevant standards stipulate that the noise in residential areas should not exceed 55 decibels during the day and should be below 45 decibels at night.
In order to prevent noise, Professor Ma Dayou, a renowned Chinese phonologist, has summarized and studied the hazards and standards of various types of noise both domestically and internationally, and proposed three suggestions:① In order to protect people's hearing and physical health, the allowable value of noise is between 75-90 decibels ② Ensure conversation and communication, and the allowable value of environmental noise is between 45-60 decibels ③ It is recommended to sleep between 35-50 decibels
Supplementary:
① 30-40 decibels is an ideal quiet environment ② 70 decibels can affect the conversation ③ Long term living in an environment above 90 decibels can seriously affect hearing and lead to diseases such as neurasthenia, headache, and hypertension
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