NEN NPR CEN/TS 1793-4 : 2004
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
ROAD TRAFFIC NOISE REDUCING DEVICES - TEST METHOD FOR DETERMINING THE ACOUSTIC PERFORMANCE - PART 4: INTRINSIC CHARACTERISTICS - IN SITU VALUES OF SOUND DIFFRACTION
04-02-2015
01-12-2013
Explains a test method for determining the intrinsic characteristics of sound diffraction of added devices installed on the top of traffic noise reducing devices.
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