Fraunhofer Institute for Building Physics IBP
Flanking sound transmission of wall constructions
Acoustics
Sound Transmission in Focus: Testing for Optimal Building Solutions
Our P3 diagonal test facility enables comprehensive analysis of the longitudinal sound insulation and joint insulation of a wide range of wall systems - from lightweight to solid constructions. Its innovative design, consisting of four adjacent rooms and elastic separating joints, allows for detailed simulation of real-world building and usage scenarios. This test bench meets the requirements of DIN EN ISO 10848-2 and DIN EN ISO 10848-3 standards, ensuring reliable, standard-compliant results. State-of-the-art measurement technology permits precise evaluation of airborne and structure-borne sound transmission in all relevant propagation directions, including direct, longitudinal, and diagonal transmission. These measurement results contribute significantly to optimizing the acoustic performance of your wall systems and meeting market requirements.
By conducting tests at the Fraunhofer IBP, you gain access not only to state-of-the-art technical standards but also to profound scientific expertise. Our experts support you in developing and optimizing your products by detecting acoustic weaknesses and enabling targeted improvements. This process not only enhances product quality but also strengthens your market position significantly – an investment in success and customer satisfaction.
How can we assist you? Learn more about our range of services or send us an e-mail.
| Measurement | Normalized flanking level difference, vibration transmission (index) of wall junctions |
| Standards | DIN EN ISO 10848-2, DIN EN ISO 10848-3 |
| Measurement object | Separating walls (massive, masonry, lightweight), additional linings, internal and external thermal insulation composite systems, wall junctions |
Technical data
| Floor area (4 rooms) | 89.5 m² (total) |
| Room volume (4 rooms) | 276.6 m³ (total) |
| Entrance doors (H × W) | 2.00 × 0.83 m and 2.06 × 1.94 m |
Special feature
| Max. sound reduction (related to the size of test sample) | Rw,max = 81 to 83 dB (depending on transmission path) |
More information
- The test facility with concrete walls can be separated in 4 adjacent rooms, which are divided by isolated joints (horizontal, vertical) in order to minimize the flanking sound transmission.
- Reproduction of standard construction situations
- Reduced flanking transmission
- Typical scenarios in buildings can be investigated, considering all horizontal direct and flanking transmission paths of airborne and structure-borne sound.