This document specifies the laboratory method for measuring the airborne sound insulation performance of road traffic noise reducing devices in reverberant conditions. It covers the assessment of the intrinsic performance of barriers that can reasonably be assembled inside the testing facility described in EN ISO 10140-2 and EN ISO 10140-4. This method is not intended for the determination of the intrinsic characteristics of airborne sound insulation of noise reducing devices to be installed on roads in non-reverberant conditions.<\/p>\n
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| 3<\/td>\n | BS EN 1793-2:20122018 Compliance with a British Standard cannot confer immunity from legal obligations. Amendments\/corrigenda issued since publication <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | ForewordEuropean foreword <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | Introduction <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | Figure 1 \u2014Sketch of the reverberant condition check in four cases (not to scale) <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | Figure 1 \u2014 Sketch of the reverberant condition check in four cases <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 3.1 noise reducing device 3.2 acoustic element 3.3 structural element <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | Table 1 \u2014 Symbols and abbreviations <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | Figure 2 \u2014 Mounting conditions for test specimen <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 7.2 Further information <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | Table A.1 \u2014 Categories of airborne sound insulation <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Bibliography <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 4 Symbols and abbreviations 5 Test arrangement <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 6 Test procedure and evaluation 6.1 Test method 6.2 Single-number rating of airborne sound insulation, DLR <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 6.3 Expression of results 7 Measurement uncertainty 8 Test report <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | Annex A (informative)Categorization of single-number rating <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Annex B (informative)Guidance note on the use of the single number rating DLR <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | Annex C (informative)Measurement uncertainty C.1 General C.2 Measurement uncertainty based upon reproducibility data <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Tracked Changes. Road traffic noise reducing devices. Test method for determining the acoustic performance – Intrinsic characteristics of airborne sound insulation under diffuse sound field conditions<\/b><\/p>\n |