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

ISO 17201-4:2006 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. It also gives guidance on how to use this source level to calculate the sound exposure level at a receiver position.ISO 17201-4:2006 is intended for calibres of less than 20 mm, but can also be applied for large calibres. Additionally, the data can be used to compare sound emission from different types of ammunition used with the same weapon. This part of ISO 17201 is meant for weapons used in civil shooting ranges, but is also applicable to military weapons.