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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
GB-T 5170.22-2024 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
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