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Sound absorption coefficient calculation software

The ZORBA software is a tool for calculating the sound absorption coefficient of porous materials and perforated surfaces. ZORBA is currently available in version v3.0 with a German user interface and is developed by Marshall Day Acoustics.


Further information can be found on the official ZORBA homepage www.zorba.co.nz or in the software user groups (XING).

ZORBA - Demo version / 30-day license

The demo version of ZORBA is available for free download. In demo mode, however, the material selection is random.

For practical calculations, we provide a valid, time-limited software key on request which allows the full range of functions to be tested. A new download is not necessary.

Request a 30-day trial license:

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