Prediction of sound around shooting ranges

The assessment of sound around shooting ranges can be challenging. On one hand, methods to predict the sound levels around shooting ranges are described in the standard ISO 17201 "Acoustics - Noise from shooting ranges". It consists of measurement and calculation methods to determine the source strength from muzzle blasts or explosives and supersonic projectiles, as well as a method for the sound propagation. The methods to calculate the muzzle and projectile sound are being updated this year. On the other hand, challenges remain to measure the source strength from weapons with a large caliber and the sound emitted from shooting facilities with a complex geometry. These issues and its approach are illustrated. Also, a noise management method is described, as a pilot study, that allows for a flexible use of different weapons for a given period of time, typically a year.