1. A large area of acoustic ceiling should be installed on the roof of the pavilion. This method can be widely used in the auditorium, theater and gym with flat roof. But for stadiums with transparent roofs or curved vaults, this completely destroys the original style and lighting function.

2. If a large area of sound absorption body is hung under the arch dome or the arch net frame of the gymnasium with pervious roof material, it will also affect the perception and the position of the originally designed or installed lighting fixtures, which is not advisable.

3. In order to solve the acoustic defect of sound focusing, a large acoustic absorber can be hung in the center of the ceiling, and a strip acoustic absorber can be installed in the arch network frame.

4. In order to achieve good and accurate sound absorption effect, the space sound absorption body that has been tested in advance can be suspended from the roof along with the shape of the network frame.