环境试验设备检验方法 第22部分：声振试验用混响场试验设备 Inspection methods environmental testing equipment— Part 22: The equipment for acoustic vibration test in reverberation field  ICS  19.040 CCS  K 04   中华人民共和国国家标准 GB/T 5170.22—2024 2024-09-2 9发布 2025-04-0 1实施     国家市场监督管理总局 国家标准化管理委员会 发 布 目　　次 前言   ·····································································································   Ⅲ 引言   ·····································································································   Ⅳ 1     范围   ··································································································   1 2     规范性引用文件   ······················································································   1 3     术语和定义   ···························································································   1 4     组成和原理   ···························································································   2 5     检验项目   ······························································································   2 6     检验条件   ······························································································   2      6.1     环境条件   ·························································································   2      6.2     检验用仪器设备   ·················································································   3 7     检验方法   ······························································································   3      7.1     检验前准备   ······················································································   3      7.2     声谱成型特性检验   ···············································································   3      7.3     声压级示值误差检验   ·············································································   4      7.4     最大总声压级检验   ···············································································   5      7.5     混响场工作空间声压变化检验   ···································································   6      7.6     混响时间检验   ····················································································   6      7.7     最低可用频率检验   ···············································································   7      7.8     环境噪声检验   ····················································································   7 8     检验结果和检验周期   ·················································································   7      8.1     检验结果   ·························································································   7      8.2     检验周期   ·························································································   8 附录 A （资料性）　检验中测量不确定度的描述   ·······················································   9      A.1     测量扩展不确定度（U）的计算   ································································   9      A.2     声压级测量结果的不确定度分析   ······························································   11 参考文献   ································································································   13   图1　声振试验用混响场试验设备组成示意图图1   ·······················································   2 图2　用于检验声谱成型能力的1/3倍频程谱   ···························································   4 图3　16个测量传声器位置示意图   ·······································································   5 图4　8个测量传声器位置示意图   ········································································   6   表1　混响场试验设备检验项目表1   ······································································   2 表2　1/3倍频程声压级谱   ···············································································   4 GB/T 5170.22—2024     Ⅰ 表3　最低试验中心频率和混响场体积的参考关系   ······················································   7 表A.1　声压级测量不确定度分量表   ···································································   12 GB/T 5170.22—2024     Ⅱ