GB/T 19887-2005 声学 可移动屏障声衰减的现场测量

ICS17.140.01

Z32

中华人民共和国国家标准

GB/T19887-2005/ISO11821:1997

声学可移动屏障声衰减的现场测量

Acoustics-Measurementoftheinsitusoundattenuation

ofaremovablescreen

(ISO11821:1997，IDT)

2005-09-09发布2006-04-01实施

中华人民共和国国家质量监督检验检疫总局发布

中国国家标准化管理委员会

GB/T19887-2005/ISO11821:1997

目次

前言·········································，·······································································，……皿

引言···························································，··················································，··……IV

1范围··，·················································································，··························……1

2规范性引用文件················································，·············‘·.··················.·……1

3术语和定义······································································································……1

4测量仪器.······························，····……2

5现场声衰减的测定····················································……，···············.·……，.…3

6测量不确定度······················································································……，，，，.…，·.二6

7记录内容·····································，··································································……7

8报告内容··················································································，·········，···········……7

参考文献··············································，································································……9

GB/T19887-2005/ISO11821:1997

月U吕

本标准等同采用ISO11821;1997《声学可移动屏障声衰减的现场测量》。

本标准等同采用国际标准时，将其中引用文件和参考文献内的ISO标准用我国已编制的相应国家

标准代替，并进行了编辑性修改。

本标准由中国科学院提出。

本标准由全国声学标准化技术委员会((SAC/TC17)归口。

本标准起草单位:中国科学院声学研究所、长沙奥邦环保实业有限公司、营口盼盼新型环保器材有

限公司。

本标准主要起草人:程明昆、莫建炎、徐欣、崔萍萍、李林、武道忠。

GB/T19887-2005/ISO11821:1997

引言

本标准规定了现场测定工业用可移动屏障声衰减性能的方法。屏障可以是任何一种隔断声源与接

收者之间噪声辐射路径的物体(例如:板、柔性的幕帘等);它可以是平面形的或弧形的。可移动屏障是

一种不改变其他环境条件就能拆除的屏障。这种屏障用来防护一个工作位置或一个完整的区域免受声

源辐射的噪声影响。它可用于一个有固定位置的操作者的区域;也可用于有几个无固定位置的操作者

所在的区域。例如:屏障可用作维护装置来降低维修时指定位置的噪声影响，还可用来降低靠近机器设

备或加工处的工作位置的噪声。

相关标准包括:GB/T18699.2-2002《声学隔声罩的隔声性能测定第2部分:现场测量(验

收和验证用)));GB/T19885-2005《声学隔声间的隔声性能测定实验室和现场测量》。

有关屏障在其他使用场合的国家标准有GB/T19513-2004《声学规定实验室条件下办公室

屏障声衰减的测量》和GB/T19884-2005声《学各种户外声屏障插人损失的现场测定》。

有关在工作场所降低噪声的技术资料见GB/T17249.2-2005《声学低噪声工作场所设计指

南第2部分:噪声控制措施》。

GB/T19887-2005/ISO11821:1997

声学可移动屏障声衰减的现场测量

范围

本标准规定了室内或室外可移动屏障现场声衰减性能的评价方法，本标准是插人损失测量的工程

级方法，测量既可用实际声源，也可用人工声源进行。

根据本标准计算的可移动声屏障的声衰减性能，与下列因素有关:

—围绕屏障边缘的声绕射;

—屏障构件的声透射;

—屏障面板以及周围环境的声吸收;

—如果在室内，屏瘴所处的房间

当屏障用来防护一个指定的工作位置，现场的声衰减值用来描述屏障的效果。然而，当屏障用来防

护一个完整的区域时，其性能将随测量位置而变化。因而，建议给出声衰减的最大值和最小值。声衰减

性能以插人损失来测定。

当评估室内屏障的性能时，房间的几何形状以及墙、天花板和房间设施的反射都将影响其性能。因

此，只有测试条件相同时才能进行屏障性能的比较。

本标准