GB/T 21228.2-2023
ActiveAcoustics—Sound-scattering properties of surfaces—Part 2：Measurement of the directional diffusion coefficient in a free field
声学 表面声散射特性 第2部分：自由场方向性扩散系数测量
Application Summary AI generated
This standard specifies a free-field measurement method for the directional diffusion coefficient of surfaces, quantifying how evenly sound is scattered in different directions. It is applied in architectural acoustics and building material testing to evaluate the acoustic performance of wall panels, ceiling tiles, and other reflective or diffusive surfaces. Engineers use it to design concert halls, recording studios, and other spaces requiring controlled sound diffusion.
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