BS ISO 13474:2009

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Basic equations
5 Calculation of a statistical distribution
6 Calculation of attenuation
7 Classification
8 Probability of occurrence of sound speed profiles
9 The source
10 Uncertainties
Annex A (informative) - Example of the estimation of the
        statistical distribution of single-event sound
        exposure levels
Annex B (informative) - Uncertainty
Bibliography

Describes the framework of an engineering method for calculating a statistical distribution of sound exposure levels for impulsive sound events for the purposes of environmental noise assessment.

This International Standard specifies the framework of an engineering method for calculating a statistical distribution of sound exposure levels for impulsive sound events for the purposes of environmental noise assessment. This International Standard is applicable to impulse sounds propagating over large distances (e.g. 0,5km to 30km) from sources such as mine blasting, artillery fire and bomb explosions, using conventional explosives of moderate charge mass (e.g. 0,05kg to 1000kg of TNT equivalent). The effects of meteorological conditions and terrain upon sound propagation are considered.