NBN EN ISO 17201-4 : 2006

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Regions
5 Source description
  5.1 Source point
  5.2 Source sound exposure level
6 Guidelines for calculating sound exposure levels at
  receiver locations
  6.1 Basic equation
  6.2 Calculation of the attenuation terms
7 Uncertainty in source description and propagation
Annex A (informative) Derivation of constants and
                      consideration of barrier and other
                      effects
Annex B (informative) Guidance on prediction uncertainty
Bibliography

Provides a computational model for determining the acoustical source level of projectile sound and its one-third-octave-band spectrum, expressed as the sound exposure level for nominal mid-band frequencies from 12,5 Hz to 10 kHz.