Diffuse-field testing
We measure your material’s diffuse-field sound absorption (NRC, SAA) and transmission loss (STC) to internationally recognized standards.
Description
Evaluate how your product absorbs and blocks sound under realistic diffuse-field conditions. Mecanum measures NRC and SAA from the third-octave absorption curve, and STC from the transmission loss spectrum, all under diffuse-field conditions that capture the full acoustic behavior of your material. These ratings give you a clear benchmark to compare materials and guide both design and compliance decisions, whether you’re developing insulation panels, automotive parts, or construction systems.
Our methods
Small acoustic test cabin (alpha cabin)
Compact, cost-effective for smaller samples, ideal for prototyping and R&D, well suited to automotive, covering 250 Hz to 10 kHz.
Large chamber
Full ISO and ASTM compliance, suited to large-format samples, highly accurate, with longer lead times and higher budgets.
Workflow
Describe
your materials and your target ratings
Send
your samples with our handling guidance
We measure
under diffuse-field conditions
Receive
a full reporting including certification-ready ratings and curves