Noise is one of the major environmental pollutions, it hinders people's conversation, thinking, learning, it makes people feel unpleasant. Noise is mainly divided into:
Traffic noise (roads, railways, highways, cars, buses, trains, trucks, airports, etc.)
Equipment noise (referring to the noise generated by the operation of the machine, water pumps, fresh air units, diesel engines, boilers, central air conditioning units, etc.)
Social noise (supermarkets, dance halls, food markets, etc. entertainment, more crowded places)
Construction noise (construction noise, noise is relatively large, many types)
My company's noise control: generator room, air compressor room, cooling towers, industrial refrigeration rooms, central air-conditioning room and other industrial production sites, karaoke OK hall, dance halls, theaters, office buildings and so on.