The sound enclosure is a good device for reducing machine noise. The sound enclosure is a cover-shaped structure that encloses a noise source in a relatively small space to reduce the radiation noise from the source to the surrounding environment. The enclosure wall is composed of soundproof board, damping coating and sound absorption . The sound enclosure of appropriate type can be used according to specific requirements of the operation, installation, maintenance, cooling and ventilation of the noise source equipment. Common sound enclosures include movable sealing type, fixed sealing type, partially open type and other structural types. The sound enclosures are commonly used for noise reduction in mechanical equipment generating strong noise in workshops, such as wind turbines, air compressors, diesel engines, blowers, ball mills, etc., and their noise reduction capacity can generally be up to 15-40dB (A).