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| 005 | 20170118103806.0 | ||
| 008 | 120330t xxu||||| |||| 00| 0 eng d | ||
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_aES-MaBCA _cES-MaBCA |
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_914544 _aTsiatis, Nikolaos E. |
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_aUnderstanding distance shooting and the type of firearm from the analysis of gunshot sounds _h[Recurso electrónico] PDF |
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| 520 | _aIn order to study gunshot sounds, experimental shootings were conducted in an open shooting range to record the sound of gunshots. The results were tabulated for a total of 168 gunshots. Shots were fired using pistols, revolvers, submachine guns, rifles and shotguns in different calibres from selected distances relative to the recording devices. Both a conventional sound level meter (SLM) and a measurement microphone were used. These were placed at selected points behind the shooting position and the sound of each shot was recorded. At the same time, the signal received by the microphone was transferred to a computer connected through an appropriate audio interface with a preamplifier. The peak amplitude of the gunshot was calculated in the accepted engineering units (dB) of sound pressure level. The shortest distance for the recordings was 9.60 m and the furthest was 38.40 m. The experiment was carried out using the following calibres: 6.35 mm, 7.62 mm Tokarev, 7.65 mm, 9 mm Short, 9 mm Makarov, 9 mm Parabellum, .45 Auto, .22 LR, .32 S&W, .38 S&W, .38 Special, .357 Magnum, 7.62 mm Kalashnikov and 12 GA. A decrease of the peak amplitude, equivalent to the increasing of the distance, was observed as expected. Values appeared to follow the inverse square law. By analyzing a recorded gunshot sound it is possible to calculate the distance between that discharged firearm and the recording device. In addition, we noted the possibility of determining the sound amplitude of the gunshot coming from a certain type of weapon. | ||
| 650 | 0 |
_91836 _aPolicía |
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_91178 _aInvestigación |
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_91182 _aMetodología de análisis |
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_91254 _aArmas |
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_aEuropean Police Science and Research Bulletin _g. -- Vol. 15 (Winter 2016) p. 68-80 _iEn : _tEuropean Police Science and Research Bulletin _w4910 _x1831-1857 |
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| 856 | 4 | _uhttps://www.cepol.europa.eu/sites/default/files/science-research-bulletin-15-2.pdf | |
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_2udc _cAN |
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_c19030 _d19033 |
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