What is the noise standard in decibels?

Legal analysis: the noise level of 30 ~ 40 decibels is a relatively quiet normal environment; More than 50 decibels will affect sleep and rest. Due to lack of rest, fatigue cannot be eliminated, and normal physiological functions will be affected to some extent; Conversation interference above 70 decibels causes distraction, inattention, affecting work efficiency and even accidents; Working or living in a noise environment above 90 decibels for a long time will seriously affect hearing and lead to other diseases.

Legal basis: People's Republic of China (PRC) Law on Prevention and Control of Environmental Noise Pollution.

Article 2 The term "environmental noise" as mentioned in this Law refers to the sound generated in industrial production, construction, transportation and social life that interferes with the surrounding living environment.

The term "environmental noise pollution" as mentioned in this Law refers to the phenomenon that the environmental noise generated exceeds the environmental noise emission standards prescribed by the state and interferes with the normal life, work and study of others.

Article 3 This Law is applicable to the prevention and control of environmental noise pollution in People's Republic of China (PRC).

This law is not applicable to the prevention and control of noise hazards caused by self-engaged production and business operations.