Fraunhofer Institute for Building Physics IBP
Akustischer Halb-Freifeldraum zur Messung der Schallausbreitung und Richtcharakteristik einer Schallquelle.
Sound propagation in a semi-anechoic chamber
Acoustics
| Measurement | Sound propagation, sound shielding and attenuation |
| Measurement object | Scale models of constructions, buildings and landscapes, for example sound screens and noise barriers |
Technical data
| Free room size (inside liner) (L × W × H) | 19,43 m × 5,25 m × 6,17 m |
| Room volume | 629 m3 |
| Entrance door (H × W) | 1,90 m × 2,37 m |
Special features
| Connection to a reverberation room | Measurement of sound insulation and sound absorption of elements between reverberation and anechoic room |
| Size of the connecting door (measuring surface) | 3,80 m × 2,35 m |
More information
- Scale model measurements (on a scale 1: 40), including rooms
- Determination of sound propagation in scale model landscapes and urban scenarios, for example emission and shielding of buildings, sound screens and noise barriers
- Vibrational isolation by using “Omega Clamps” to suppress influence due to structure-borne sound
- Lower cut-off frequency 125 Hz (according to standard)