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The effective non-lethal range of an AHD depends on the total acoustic output of the unit. Typically, this range is 50 metres (160 ft) or less. In addition to its "voice" feature, which acts as a loudspeaker , the LRAD has an "alert" feature, which emits loud chirping or beeping sounds, which can be used at the top of the decibel range of the ...
The multiple entry horn (also known under the trademarks CoEntrant, Unity or Synergy horn) is a manifold speaker design; it uses several different drivers mounted on the horn at stepped distances from the horn's apex, where the high frequency driver is placed. Depending on implementation, this design offers an improvement in transient response ...
Lethal Company is a cooperative video game for up to four players played in first-person perspective. Set in a retro-futuristic setting, players work as contracted employees of "The Company". They can communicate with each other through the in-game proximity chat , as well as proximity text chat.
A horn loudspeaker is a loudspeaker or loudspeaker element which uses an acoustic horn to increase the overall efficiency of the driving element(s). A common form (right) consists of a compression driver which produces sound waves with a small metal diaphragm vibrated by an electromagnet, attached to a horn, a flaring duct to conduct the sound waves to the open air.
A patent horn loudspeaker. Loudspeakers are often built into horn-shaped enclosures or use horns. Most often the higher-frequency elements (tweeters and midranges) use horns, sometimes with acoustic diffraction lenses to spread the sound waves in a horizontal pattern at ear-level and limit the vertical pattern. An audio driver (e.g., a speaker ...
Hughes Aircraft Company: AN/AAR-31: Infrared (IR) detection set for Anti-submarine warfare: Barnes Engineering AN/AAR-34: Infrared (IR) Tracking & Missile Warning System, replacing the AN/ALR-23: F-111 Aardvark: Cincinnati Electronics AN/AAR-37: Infrared (IR) Detector: P-3A/B Orion, EP-3E: Hughes Aircraft Company: AN/AAR-38: COMPASS COOL ...
Another more recent horn-reflector design is the cass-horn, which is a combination of a horn with a cassegrain parabolic antenna using two reflectors. [ 25 ] 15-meter (50 ft) Holmdel horn antenna at Bell Labs in Holmdel, New Jersey, USA, with which Arno Penzias and Robert Wilson discovered cosmic microwave background radiation in 1964.
The vuvuzela / v uː v uː ˈ z ɛ l ə / is a horn, with an inexpensive injection-moulded plastic shell about 65 centimetres (2 ft) long, which produces a loud monotone note, typically around B♭ 3 [2] (the first B♭ below middle C). [3] Some models are made in two parts to facilitate storage, and this design also allows pitch variation.