Background and aim: it is well known that weapon noise poses a risk on the hearing organ of sport shooters. Disappointingly there are no uniform criteria for evaluation of shooting ranges’ acoustic environment. We aimed at presenting a method for an objective assessment of noise exposure in shooting sports. Materials and methods: we collected and described acoustic signals during training and competition in the 25 m shooting range. The recorded material was analysed with the orthogonal, adaptive parametrization by Shur. Results: the noise reaching the hearing organ of a shooter is combined of random, short-term, impulse-type signals emitted by weapon. We have found that among parameters required for the description of the shooting noise are: the effective duration of a specifi c signal, the time-domain structure of a combined signal, the time/frequency structure, the energy evaluation and the number of signals. Methods used for occupational noise evaluation are not appropriate for sport shooting because of differences of time and frequency characteristics of acoustic impulses. Conclusions: the orthogonal, adaptive parametrization by Shur recognizes the time-domain and the power spectrum of acoustic signals. It delivers adequate information on the hazard from the impulse noise in shooting sports.
Key words: weapon, sports, noise-induced hearing loss, impulse noise, noise evaluation