Schallabsorption, Schalldämmung - Messung, Auslegung und Optimierung – Gesellschaft für Akustikforschung Dresden mbH

Sound absorption and sound insulation

With respect to the measurement of acoustic material properties – especially the sound absorption and the sound insulation – the Gesellschaft für Akustikforschung Dresden mbH offers you a wide range of services.

These parameters can be applied to design and to optimize the acoustic efficiency of multi-layer absorbers as well as silencers and mufflers.

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Measurement of sound absorption coefficient, sound insulation etc.

measurement of the sound absorption coefficient, the surface impedance and the sound reflection factor of small material samples in the impedance tube AED 1000 – AcoustiTube^® (Kundt`s tube) according to DIN EN ISO 10534-2

measurement of the sound insulation (transmission loss), the transmission coefficient, the complex absorber parameter (wave number / propagation constant, characteristic impedance) of small samples porous sound-absorbing material in the transmission tube AED 1200 – AcoustiTube^® by using the Transfer-matrix method of Song and Bolton

determination of the sound absorption coefficient of large material samples in the reverberation chamber according to DIN EN ISO 354

determination of the sound absorption coefficient and the complex surface impedance in situ according to DIN ISO 13472-1 with sound absorption measuring system AED 800 and according to DIN ISO 13472-2 with impedance tube AED 1000 – AcoustiTube^®

measurement of spectral sound insulation / transmission loss in the test setup for windows according to DIN EN ISO 10140-2; rating according to DIN EN ISO 717-1

Optimization of sound absorbers and mufflers

calculation of the sound propagation (sound absorption, sound reflexion, sound insulation) above layered absorbers by applying different absorber models (e. g. homogeneous model, phenomenological model) with sound absorber software AED 3001 – AcoustiCalc^{® Absorber}

prediction and optimization of the sound absorption in mufflers and silencers as well as absorbent-lined ducts by both analytical models with muffler software AED 8001 – AcoustiCalc^{® Silencer} and by numerical calculation (see FEM)

Questions and Comments »

Questions and comments?

If you have any enquiries about our products or services you can call us at +49 351 811 309-40, email us at info @ akustikforschung.de or use the contact form below. We are happy to help!