
Road Traffic Noise Reducing Devices - Test Method For Determining The Acoustic Performance - Part 4: Intrinsic Characteristics - In Situ Values Of Sound Diffraction
出版:Nederlands Normalisatie Instituut

專家解讀視頻
基本信息
標準編號: NEN EN 1793-4:2015
發布時間:2015/4/1 0:00:00
標準類別:Standard
出版單位:Nederlands Normalisatie Instituut
標準頁數:34
標準簡介
Explains a test method for determining the intrinsic characteristics of sound diffraction of added devices installed on the top of traffic noise reducing devices.
標準備注
Supersedes NEN NPR CEN/TS 1793-4. (04/2015)
等同采用的國際標準
EN 1793-4:2015 - Identical