PREN 1793-4 : DRAFT 2014
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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
01-03-2015
01-07-2014
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Sound diffraction index difference
measurements
5 Measurement uncertainty
6 Measuring procedure
Annex A (informative) - Indoor measurements
for product qualification
Annex B (informative) - Measurement uncertainty
Bibliography
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