GB/T 6881.2-2002声学　声压法测定噪声源声功率级　混响场中小型可移动声源工程法　第1部分：硬壁测试室比较法.pdf

17.140.01 撰2 中 华 人 民 共 和 国 国 家 标 准 GB/T6881.2-2002 idtISO3743-1:1994 声学 声压法测定噪声源声功率级 混响场中小型可移动声源工程法 第 1部分 :硬壁测试室比较法 Acoustics-Determinationofsoundpowerlevelsofnoisesources- Engineeringmethodsforsmall,movablesourcesinreverberantfield -Part1:Comparisonmethodforhard-walledtestrooms 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/T 68812-2002 目 次 前言 ··················································································································…… I ISO前言 ············································································································…… II 0 引言 ···············································································································…… 1 1 范围 ···········································································。···································…… 2 2 引用标准 ·········································································································…… 3 3 定义 ·······························。·······································。·······································…… 4 4 硬壁测试室的要求 ···········································，··················································一· 5 5 仪器 ···············································································································…… 6 6被测声源的安装和运行 ········································································.······.··……6 7 测试室中的测量 ································································································…… 7 8 声功率级的计算 ·······················································································…… “·”‘’‘·9 9 要记录的资料 ··········································