DIN EN 14389-1-2008 道路交通噪音减弱装置.长期效能评估用程序.第1部分:声学特性
Road traffic noise reducing devices - Procedures for assessing long term performance - Part 1: Acoustical characteristics; English version of DIN EN 14389-1:2008-02
This European Standard defines the means for evaluating the acoustic durability of Road Traffic Noise Reducing
Devices
In this European Standard, the sound absorption is characterised by the single-number rating of sound reflection
DL<(INDEX)>RL) as defined in CEN/TS 1793-5. The airborne sound insulation is characterised by single-number rating of
airborne sound insulation DLsl as defined in CEN/TS 1793-5.