Abstract The basic objective of environmental protection against noise is the care for acoustic climate, among others via maintaining the allowable noise levels. In many countries, ISO 1996 standards constitute the reference for the measurement and assessment of acoustic environment, thus it is necessary to verify the guidelines contained therein in different measurement circumstances. The presented study covered the recommended −3 dB correction for microphone location at a distance of 0.5–2.0 m from building facade. Two different noise types are analyzed: road (extended source) and industrial (point source). With the use of A-weighted equivalent sound level indicator it has been determined that the actual reflection of sound from building facade are considerably lower than 1 dB. The applications proposed a modification on the guidelines for microphone location near building facade with regards to the ISO 1996-2:2017 standard. The modification applies only to measurements performed to control compliance with noise limits in the environment.

中文翻译：

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测量麦克风位置对环境噪声评估结果的影响

摘要 环境保护抗噪声的基本目标是通过保持允许的噪声水平来保护声学环境。在许多国家，ISO 1996 标准构成了声环境测量和评估的参考，因此有必要在不同的测量环境下验证其中包含的指南。所提出的研究涵盖了对距离建筑立面 0.5-2.0 m 处的麦克风位置的推荐 -3 dB 校正。分析了两种不同的噪声类型：道路（扩展源）和工业（点源）。通过使用 A 加权等效声级指示器，已经确定来自建筑物立面的实际声音反射远低于 1 dB。申请建议修改建筑物立面附近麦克风位置的指南，符合 ISO 1996-2:2017 标准。该修改仅适用于为控制对环境中噪声限制的遵守而进行的测量。