How many decibels is the national standard noise normal?

Noise disturbing people is an illegal act defined by the consequences of behavior. As long as the noise interferes with the normal life of citizens, it is an illegal fact that noise disturbs the people. According to China's national standards, the standard values of environmental noise in various regions are divided into 0 categories: 50 decibels during the day and 40 decibels at night (from 22: 00 to 6: 00 the next morning); Class 65438 +0: 55 decibels during the day and 45 decibels at night; Category 2: 60 decibels during the day and 50 decibels at night; The third category: 65 decibels during the day and 55 decibels at night; Level 4: 70 decibels during the day and 55 decibels at night; According to national standards, the noise in residential areas should not exceed 50 decibels during the day and should be lower than 45 decibels at night. If it exceeds this standard, it will be harmful to human body. The noise pollution standard of residential buildings mainly refers to 1 class and class 2 standards, and the high-grade villa area can refer to class 0 standard. Level 0 standard is suitable for areas that need to be quiet, such as convalescent areas, senior villa areas, senior hotel areas, etc. Such areas located in suburbs and rural areas should be implemented according to strict 0 standards respectively. 1 class standard is applicable to areas where residential, cultural and educational institutions are the main ones. Rural living environment can be implemented with reference to such standards. Level 2 standard is applicable to residential, commercial and industrial mixed areas.

legal ground

Article 58 of the Law of People's Republic of China (PRC) on the Prevention and Control of Environmental Noise Pollution violates the provisions of this law and commits any of the following acts, which shall be given a warning by the public security organ and may also be fined: (1) using a tweeter in a concentrated area of noise-sensitive buildings in urban areas; (two) in violation of the provisions of the local public security organs, organize entertainment, assembly and other activities in public places such as urban streets, squares, parks, etc., and use audio equipment to produce excessive volume that interferes with the surrounding living environment; (3) Failing to take measures in accordance with the provisions of Articles 46 and 47 of this Law, and emitting environmental noise from the indoor environment that seriously interferes with the life of the surrounding residents.