BS EN 1793-1:2017规定了测量吸声的实验室方法 道路交通降噪装置在混响条件下的性能。它涵盖了评估 能够合理组装在设备内部的设备的固有吸声性能 EN ISO 354中描述的测试设施。本方法不适用于测定材料的固有吸声特性 在非混响条件下的道路上安装降噪装置。本欧洲标准中提及的EN ISO 354中的试验方法不包括作为 弱阻尼谐振器。一些设备将显著偏离这些要求，并且 在这些情况下，在解释结果时需要谨慎。交叉引用: EN 1793-3EN ISO 354:2003ISO 354:2003ISO 9613-1EN 1793-5:2016ISO/IEC指南98-3GUM:1995购买本文件时提供的所有当前修订版均包含在购买本文件中。

BS EN 1793-1:2017 specifies the laboratory method for measuring the sound absorption performance of road traffic noise reducing devices in reverberant conditions. It covers the assessment of the intrinsic sound absorption performance of devices that can reasonably be assembled inside the testing facility described in EN ISO 354.This method is not intended for the determination of the intrinsic characteristics of sound absorption of noise reducing devices to be installed on roads in non-reverberant conditions.The test method in EN ISO 354 referred to in this European Standard excludes devices that act as weakly damped resonators. Some devices will depart significantly from these requirements and in these cases, care is needed in interpreting the results.Cross References:EN 1793-3EN ISO 354:2003ISO 354:2003ISO 9613-1EN 1793-5:2016ISO/IEC Guide 98-3GUM:1995All current amendments available at time of purchase are included with the purchase of this document.