Noise emissions from large-calibre weapons were measured in a shooting area according to Danish guidelines. At a distance of 100 m the peak levels (LCpeak) were 146–159 dB for the bazooka, 148–163 dB for the 155-mm cannon, 147–151 for the mortar, 128–141 dB for the antiaircraft cannon and 146–155 for the 1-kg TNT explosion. The C-weighted exposure levels (LCE1s) were 127–136 dB for the bazooka, 134–140 dB for the 155-mm cannon, 122–129 dB for the mortar and 104–115 dB for the antiaircraft cannon. Sound directivity proved to be a significant parameter for weapons. The most prominent octave bands were typically lower than 100 Hz.
References
1.
Miljo- og Energiministeriet. Miljostyrelsen. Beregning af stojkonsekvensområder omkring forsvarets ovelsesområder. Vejledning fra miljostyrelsen Nr. 8. Miljo- og Energiministeriet, Miljostyrelsen, Kobenhavn1997. 36 s.
2.
Nordtest: Shooting ranges: prediction of noise. Nordtest remiss Nr 1151–94. Delta Acoustics & Vibration, Lyngby Denmark1994. 38 p.
3.
NBG: Noise from shooting ranges. A Nordic prediction method for noise emitted by small-bore weapons. The Nordic Council of Minister's Noise Group. May 1984. Statens naturvårdsverk, Solna Sweden1984. 15 p & appendices.
4.
Miljostyrelsen: Skydebaner. Vejledning fra Miljostyrelsen. Nr. 1. Miljo- og Energiministeriet, Miljostyrelsen, Kobenhavn1995. 69 s.
5.
Försvarsmakten: Redovisning av regeringsuppdrag- Utarbeta nya riktlinger för skottbuller från artilleri och andra tunga vapen. Forsvarsmakten, högkvarteret, Stockholm1995. 15 p.
6.
PääkkönenR.AnttonenH. & NiskanenJ.: Noise control of military shooting ranges for rifles. Appl. Acoust. 32 (1991), 49–60.
7.
PääkkönenR.: Low-frequency impulse noise and its attenuation by hearing protectors and other technical means. Dissertation Publication 117. Tampere University of Technology, Tampere1993. 135 p.
8.
PääkkönenR. & KyttäläI.: Attenuation of rifle and pistol noise with the use of suppressors and subsonic bullets. Acta acustica2(1994);2, 29–36.
9.
PääkkönenR. & KyttäläI.: Effects of rifle-calibre muzzle brakes and suppressors on noise exposure, recoil and accuracy. Acta acustica2(1994); 4, 143–148.
10.
PääkkönenR.: Noise attenuation of structures against impulses from large calibre weapons or explosions. Applied acoustics45(1995), 263–278.
