在ISO 3382-3 (2022) 中单个数量不确定性的简化表达式
Lucas Lenne1, Alkahf Aboutiman1, Jan Selzer2
1Institut National de Recherche et de Sécurité, 54500 Vandoeuvre-les-Nancy, France.
The Journal of the Acoustical Society of America
|May 8, 2024
概括
这项研究简化了复杂的ISO 3382-3标准计算语音声音水平 (D2S,LpAS4m) 和可理解性 (rC,rD). 简化表达式保持准确性,同时为声学评估提供实际不确定性值.
科学领域:
- 声学 声学 在声学方面
- 音响工程 音响工程 音响工程
- 建筑物理 建筑物理
背景情况:
- ISO 3382-3 (2022) 标准定义了单个数量 (SNQs) 的语音空间衰变和可理解性.
- 目前的不确定性评估依赖于单个循环测试,限制了准确性.
- 不确定性传播的分析表达式存在,但对于实际使用来说太复杂了.
研究的目的:
- 为了简化ISO 3382-3 SNQs中不确定性的复杂分析表达式.
- 用广泛的现实世界测量来验证简化表达式.
- 为语音声学标准提出实用,准确的不确定性值.
主要方法:
- 应用了不确定性传播定律来导出分析表达式.
- 在法国和德国的36家公司进行了95次测量.
- 通过识别和忽略可忽略的术语和估计不确定性的简化表达式.
主要成果:
- 发现距离测量的不确定性是可以忽略不计的.
- 开发了A级加权语音水平 (D2S,LpAS4m) 和语音传输指数 (rC,rD) 的简化表达式.
- 简化表达式的准确性与原始复杂形式相比较.
结论:
- 该研究为ISO 3382-3 SNQs提出了简化,准确的不确定性表达式.
- 推的不确定性值:D2S和LpAS4m的0.6dB,rC的7%,rD的10%.
- 这些发现有助于在现实环境中更容易获得和更准确的声学测量.
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