The functional positioning of the multipurpose hall is a multi-purpose independent space for holding various conferences, speeches, reports, press releases, teaching training, operas and dramas, small concerts and other activities. The indoor acoustic environment is not required for different usage scenarios.
Reverberation time
Using MQ wooden acoustic panel and sound diffuser, the adjustable range of empty field reverberation time is as follows:
 |  |  |
| Full sound absorption | Full reflection | Comprehensive |
Preliminary site measurement, (500Hz-1000Hz) adjustable reverberation time 0.95~1.2 seconds.
Noise control
After using MQ sound insulation system to reduce noise sources such as indoor ventilation and air conditioning equipment, the data are as follows:
Space | SFN | acoustic noise specification（NR） | Sound insulation of wall |
Multipurpose Hall | △Lp ≤ 6dB | NR 25 | FSTC 55dB |
Test results
The adjustable range of 500-1000Hz reverberation time measured by 12 test points in the empty field is 0.95~1.2 seconds and the reverberation time designed by the acoustic consultant is very close to 0.8~1.3 (±0.1) seconds. Considering that the test is empty field data, The audience’s absorption of sound energy is not considered. When 80% of the venue is full, the reverberation time will be further reduced, so the reverberation time must fall within the design area, and the reverberation time meets the design requirements.
