Sound absorption measurements in accordance with DIN EN ISO 354, DIN EN ISO 11654, and DIN EN 1793-1
In our accredited acoustics laboratory, we offer standard-compliant tests to determine the sound absorption of building materials, absorbers, and noise control materials. Measurements are conducted in a reverberation chamber test facility in accordance with DIN EN ISO 354, which enables the precise determination of the sound absorption coefficient (α) across the relevant frequency range.
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Our testing services include:
- Measurement of the frequency-dependent sound absorption coefficient α (100–5000 Hz) in a reverberation chamber in accordance with DIN EN ISO 354
- Evaluation in accordance with DIN EN ISO 11654:
– Determination of the weighted sound absorption coefficient αw
– Classification into absorber classes (A–E)
– Specification of the characteristic evaluation curve - Additional evaluation according to DIN EN 1793-1 for traffic noise barriers, including the noise reduction class DLα
Typical test specimens include:
- Wall and ceiling absorbers (e.g., made of mineral fiber, wood, textiles, floor coverings, curtains)
- Acoustic ceilings and suspended ceiling systems
- Acoustic plasters, microperforations, and perforated panels
- Sound-absorbing materials in transportation infrastructure (e.g., noise barriers)
The tests are conducted under controlled conditions. Optionally, we also offer measurements with an air gap or on a defined substructure (e.g., to simulate typical installation situations).
