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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 21228.2-2023 |
Acoustics - Surface sound scattering properties - Part 2: Free-field directional diffusion coefficient measurement {译} 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 |
China National Standards Acoustics Sound scattering |
 English PDF |
| GB/T 21228.1-2007 |
Acoustics - Sound-scattering properties of surfaces - Part 1: Measurement of the random-incidence scattering coefficient in a reverberation room 声学 表面声散射特性 第1部分：混响室中无规入射声散射系数测量 |
China National Standards Acoustics Sound scattering |
English PDF |
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