GB/T 6881.1-2002声学　声压法测定噪声源声功率级混响室精密法.pdf

17.140.01 zICS32 中 华 人 民 共 和 国 国 家 标 准 Gr/s 6881.1一2002 idtISO 3741:1999 声学 声压法测定噪声源声功率级 混响室精密法 Acoustics-Determinationofsoundpowerlevelsofnoisesources usingsoundpressure-Precisionmethodsforreverberationrooms 2002一03一26发布 2002一12一01实施 中 华 人 民 共 和 国 发 布 国家 质 量 监 督 检 验 检 疫 总 局 Gs/T6881.1-2002 目 次 前言 ······································································。·····································…… 1 ISO前言 ·······································…… N 。 引言 ······。···。···············。········。···。·······。····。·························································…… 1 1 范围 ··································································································价· ········…… 2 2 引用标准 ·。·······。·······························································································…… 2 3 术语和定义 ····························································，······················，··················…… 3 4 测量不确定度 ············。···。····。·············。··································，····························…… 4 5 声学环境 ·······。····························。································································…… 5 5.1 概述 ········································································································…… 5 5.2 测试室的容积和形状 .·5 5.3 测试室吸收的要求 ········。···。····················································...··········..··…… 6 5.4 背景噪声要求 ··········································。····················。·····························…… 6 5.5 温度、湿度、气压的要求 ·····················································.··...··.··.··..·..·...……6 6 仪器 .················。····。···············。·········。·······…… 6 6.1