Legal analysis: the law does not specify what time is considered a nuisance, but regardless of what time the decibel is too large is a nuisance. If it is a residential, cultural and educational institutions in the area, 55 decibels during the day, 45 decibels at night, even if it is a nuisance. If it is residential, commercial, industrial mixed area, 60 dB during the day, 50 dB at night, even if it is a nuisance.
Legal basis: "The Chinese People's **** and the State Environmental Noise Pollution Prevention and Control Law" Article 45 prohibits any unit or individual in the urban area of noise-sensitive buildings in the concentration of the use of high-pitched broadcasting speakers. In urban areas, streets, squares, parks and other public **** place to organize entertainment, gatherings and other activities, the use of audio equipment may produce interference with the surrounding living environment of excessive volume, must comply with the provisions of the local public security organs.