Fraunhofer Institute for Building Physics
Flanking sound transmission via ventilation ducts and shafts
Acoustics
| Measurement | Normalized flanking level difference (German “Schachtpegeldifferenz”) |
| Standard | DIN 52210 |
| Measurement object | Ventilation ducts and shafts, exhaust systems, components of ventilation systems |
Technical data
| Floor area (both rooms) | 20 m² |
| Room volume (2 rooms) | 70.6 m³ and 50.0 m³ |
| Entrance doors (H × W) | 2.18 × 0.83 m and 2.02 × 1.95 m |
| Size of mounting place | Variable cross-section of ducts and shafts |
Special feature
| Max. sound reduction (related to the size of test sample) | Dw ≥ 55 dB |
More information
- Circumferential bracket to support the separating floor
- Variable installation of duct and shaft systems