Legal analysis: If the sound reaches 55 decibels during the day and 45 decibels at night, it will cause a disturbance to residents.

Legal basis: Article 45 of the "Law of the People's Republic of China on the Prevention and Control of Environmental Noise Pollution" prohibits any unit or individual from using loudspeakers in areas where noise-sensitive buildings are concentrated in urban areas.

1. If you organize entertainment, gatherings and other activities in urban streets, squares, parks and other public places, and use audio equipment that may produce excessive volume that may interfere with the surrounding living environment, you must comply with the local police 2. The use of loudspeakers by businesses downstairs in a community to broadcast is an act that interferes with the surrounding living environment and is prohibited by the "Environmental Noise Pollution Prevention and Control Law."

< p>3. Units and individuals harmed by environmental noise pollution have the right to require the perpetrators to eliminate the harm; if losses are caused, they shall compensate for the losses in accordance with the law.