First of all, in order to achieve a good hall sound quality, good acoustic decoration is a prerequisite. Secondly, it is the role played by the sound system and equipment.

Building acoustic index requirements (acoustic renovation requirements): A. Background noise

less than or equal to NR35;

B.

Acoustic isolation, vibration isolation measures

Halls should be good acoustic isolation vibration isolation measures,

Acoustic isolation vibration isolation indicators in accordance with the GB3096-82 "urban regional ambient noise standards" residents. Cultural and Educational District, i.e., 50dBA during daytime and 40dBA at night.

C.

Building Acoustic Indicators

1)

*** vibration, echoes, fluttering echoes, standing waves in the room, acoustic focusing, acoustic diffusion: there shall be no*** vibration of the building doors, windows, suspended ceilings, glass, seating, decorations and other facilities in the halls; no echo, fluttering echo shall be present in the halls; the halls shall have good sound insulation measures. There shall be no echo, flutter echo, room standing wave and sound focusing defects, sound field diffusion should be uniform.