Fraunhofer Institute for Building Physics IBP
Sound power in an anechoic chamber
Acoustics
| Measurement | Sound power (enveloping measurement surface), sound intensity, localization of sound sources |
| Standard | DIN EN ISO 3745 |
| Measurement object | Machinery and equipment, for example of ventilation and air-conditioning systems, and other noise sources |
Technical data
| Free room size (L × W × H) | 9,3 m × 10,4 m × 10,3 m |
| Room volume | 1090 m³ |
| Entrance door (H × W) | 1,89 m × 2,34 m |
Special feature
| Removable assembly grating as working area | 4.0 × 4.0 m area, 5000 N/m² loading capacity |
More information
- Room-in-room construction with very low background noise
- Vibrational isolation by using separate basement and steel springs
- Lower cut-off frequency 80 Hz (according to standard)