Terms of use

These terms supplement the Terms and conditions of the Acoustic Index platform, operated by AcousticIndex GbR.

They apply to all users of the platform, whether registered or using public features without an account.

Acoustic measurement data, material properties and calculated results shown on the platform are provided for general information only. They are not binding specifications for planning decisions.

Using the data does not replace independent review, professional acoustic consulting or qualified technical planning.

Product data and measurements are provided by manufacturers or public reference sources. Manufacturers remain responsible for the accuracy, completeness and currency of their own information.

Acoustic Index acts as an intermediary platform and does not verify or validate manufacturer-provided data unless explicitly stated.

We do not warrant the accuracy, completeness or currency of displayed measurements, including absorption data under ISO 354 or ISO 10534-1, scattering data under ISO 17497-1, diffusion data under ISO 17497-2, calculated indicators such as αw or αp, or calculator results.

Liability for damage arising from use of or reliance on this information is excluded to the extent legally permitted. Mandatory liability for intent, gross negligence, life, body or health remains unaffected.

The reverberation calculator is a simplified estimation tool based on the Sabine and Eyring formulas. Results are approximate and do not replace professional acoustic simulation or specialist planning.

Users must independently check data before using it in planning processes. Original manufacturer test reports should be used for binding specifications.

PTB reference materials are included for comparison purposes from public PTB publications. PTB is not responsible for how those data are displayed on Acoustic Index.