PREN 16272-3-1 : DRAFT 2011
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
RAILWAY APPLICATIONS - TRACK - NOISE BARRIERS AND RELATED DEVICES ACTING ON AIRBORNE SOUND PROPAGATION - TEST METHOD FOR DETERMINING THE ACOUSTIC PERFORMANCE - PART 3-1: NORMALIZED RAILWAY NOISE SPECTRUM AND SINGLE NUMBER RATINGS FOR DIFFUSE FIELD APPLICATIONS
01-10-2012
12-01-2013
Foreword
Introduction
1 Scope
2 Normative references
3 Definitions
4 Normalized railway noise spectrum
5 Single-number rating of sound absorption
DL[alpha]
6 Single-number rating of airborne sound
insulation DL[R]
7 Expression of results
Annex A (informative) - Guidance note on use
of the single-number rating of sound
absorption DL[alpha]
Annex B (informative) - Guidance note on use of
the single-number rating of airborne
sound insulation DL[R]
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