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2. Vehicle horn - Wikipedia

   en.wikipedia.org/wiki/Vehicle_horn

   Again, these horns can be either single, or arranged in pairs; typical frequencies for a pair are 420–440 Hz and 340–370 Hz (approximately G ♯ 4 –A 4 and F 4 –F ♯ 4) for this design. Diagram showing how a car horn works. A horn grille is a part of some designs of car or other motor vehicle that has an electric horn, such as a motor ...

3. List of onomatopoeias - Wikipedia

   en.wikipedia.org/wiki/List_of_onomatopoeias

   This is an accepted version of this page This is the latest accepted revision, reviewed on 14 January 2025. This is a list of onomatopoeias, i.e. words that imitate, resemble, or suggest the source of the sound that they describe. For more information, see the linked articles. Human vocal sounds Achoo, Atishoo, the sound of a sneeze Ahem, a sound made to clear the throat or to draw attention ...

4. Boomerang (countermeasure) - Wikipedia

   en.wikipedia.org/wiki/Boomerang_(countermeasure)

   Challenges that it faced were filtering out noise from the vehicle on which it is mounted (such as loud engines and static sounds from the radio), ignoring sounds similar to that of a gunshot (such as fireworks or a car back-firing), factoring in bullet ricochets, and ignoring outgoing fire from friendly troops. Small quantities of Boomerang ...

5. List of firearms - Wikipedia

   en.wikipedia.org/wiki/List_of_firearms

   This is an extensive list of small arms—including pistols, revolvers, submachine guns, shotguns, battle rifles, assault rifles, sniper rifles, machine guns, personal defense weapons, carbines, designated marksman rifles, multiple-barrel firearms, grenade launchers, underwater firearms, anti-tank rifles, anti-materiel rifle and any other variants.

6. Long-range acoustic device - Wikipedia

   en.wikipedia.org/wiki/Long-range_acoustic_device

   A long-range acoustic device (LRAD), acoustic hailing device (AHD) or sound cannon is a specialized loudspeaker that produces sound at high power for communicating at a distance. It has been used as a method of crowd control , which has caused permanent hearing damage , having an extremely high decibel capacity (up to 160 dB measured at one ...

7. Gunfire locator - Wikipedia

   en.wikipedia.org/wiki/Gunfire_locator

   Boomerang, a gunfire locator, being used by British forces in Afghanistan Shooting Detector Diagram. A gunfire locator or gunshot detection system is a system that detects and conveys the location of gunfire or other weapon fire using acoustic, vibration, optical, or potentially other types of sensors, as well as a combination of such sensors.