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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 Surface sound |
 English PDF |
| GB/T 3768-2017 |
Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Survey method using an enveloping measurement surface over a reflecting plane 声学 声压法测定噪声源声功率级和声能量级 采用反射面上方包络测量面的简易法 |
China National Standards Acoustics Surface sound |
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 Surface sound |
English PDF |
| GB/T 3768-1996 |
Acoustics--Determination of sound power levels of noise sources using sound pressure--Survey method using an enveloping measurement surface over a reflecting plane 声学 声压法测定噪声源声功率级 反射面上方采用包络测量表面的简易法 |
China National Standards Acoustics Surface sound |
English PDF |
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