Standard No.:	GB/T 21228.1-2007
English Name:	Acoustics - Sound-scattering properties of surfaces - Part 1: Measurement of the random-incidence scattering coefficient in a reverberation room
Chinese Name:	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
Chinese Classification:	A59    Acoustic Measurement
Professional Classification:	GB    National Standard
ICS Classification:	91.120.20 91.120.20    Acoustics in building. Sound insulation 91.120.20
Issued by:	AQSIQ; SAC
Issued on:	2007-11-14
Implemented on:	2008-5-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	7000 words
Price(USD):	190.0
Delivery:	via email in 1~3 business day

本标准规定了由表面粗糙度引起的表面无规入射声散射系数的测量方法。应在混响室中以足尺模型或实物缩尺模型进行测量。测量结果可用来描述有多少来自表面的声反射偏离了镜面反射。其结果还可用于与室内声学和噪声控制有关的对比和设计计算。
本方法不适用于表征表面声散射的空间均匀分布特性。