This article is about the noise maker. For the engine intake component, see Velocity stack.
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An air horn is a pneumatic device designed to create an extremely loud noise for signaling purposes. It usually consists of a source which produces compressed air, which passes into a horn through a reed or diaphragm. The stream of air causes the reed or diaphragm to vibrate, creating sound waves, then the horn amplifies the sound making it louder. Air horns are widely employed as vehicle horns, installed on large buses, semi-trailer trucks, fire trucks, trains, and some ambulances as a warning device, and on ships as a signaling device.
An airhorn is a pneumatic device designed to create an extremely loud noise for signaling purposes. It usually consists of a source which produces compressed...
A train horn is an airhorn used as an audible warning device on diesel and electric-powered trains. Its primary purpose is to alert persons and animals...
Car horn The sound of a typical car horn Problems playing this file? See media help. A vehicle horn is a sound-making device installed on motor vehicles...
mouthpiece; plus, in a modern horn, the operation of valves by the left hand, which route the air into extra sections of tubing. Most horns have lever-operated...
compact head and cast aluminum exponential-profile horns. These sirens stored a reservoir of compressed air, recharged periodically by a diesel engine-driven...
Trevor Charles Horn CBE (born 15 July 1949) is an English record producer and musician. His influence on pop and electronic music in the 1980s was such...
mechanism (or "coder") to sequentially open the valves admitting air to the horns; each horn was given its own timing characteristics to help mariners identify...
trumpet, or airhorn is a typically flared, parallel-sided tubular device fitted individually or in groupings to the entry of an engine's air intake system...
workers. Modern diesel and electric locomotives primarily use a powerful airhorn instead of a whistle as an audible warning device. However, the word whistle...
horn; this type is called a folded horn speaker. The horn serves to improve the coupling efficiency between the speaker driver and the air. The horn can...
handlers shout 'Stop!'. Their ultimate aim is to find two halves of an airhorn, assemble and sound it to win £10,000. Three of the contestants are caught...
The Hancock air whistle was a railroad whistle intended for use on North American diesel locomotives in place of the standard airhorn. It was manufactured...
power a pneumatic tool, airhorn or pipe organ; a bellows used to encourage a fire; a vacuum cleaner and a vacuum pump. All air pumps contain a part that...
considered "noisemakers" include: pea whistles airhorns, composed of a pressurized air source coupled to a horn, designed to create an extremely loud noise...
The Vienna horn (German: Wiener Horn) is a type of musical horn used primarily in Vienna, Austria, for playing orchestral or classical music. It is used...
A horn antenna or microwave horn is an antenna that consists of a flaring metal waveguide shaped like a horn to direct radio waves in a beam. Horns are...
extensive history of the music sits next to histories of trap and its infamous airhorn sample. Like that iconic, oft-sampled sound, nightcore's inescapable appeal...
can shoot as high as 50 feet in the air. The original Hawaiian name was puhi, meaning blowhole. The Spouting Horn is a part of the Koloa Heritage Trail...
500 L) of diesel fuel in the locomotive tank. They had Leslie S-5T-RF airhorns on the cab roof (later moved to the mid radiator section of the A unit...
control the flow of air in the single horn, which is tuned to F or nowadays with increasing frequency among first (or "high") horn players in B♭. The more...
her one working airhorn in response to Queen Mary 2 sounding her combination of two brand new horns and an original 1934 Queen Mary horn, which is on loan...
and vibration of the approaching train, its emergency brakes, and its airhorn. More than 1,000 feet of the decelerating train crossed the point where...
Kaniehtiio Alexandra Jessie Horn (née Batt; Mohawk pronunciation: [ɡanjehˈdiːjo]; born November 8, 1986), sometimes credited as Tiio Horn, is a Canadian actress...
The Golden Horn (Turkish: Altın Boynuz or Haliç; Ancient Greek: Χρυσόκερας, Chrysókeras; Latin: Sinus Ceratinus) is a major urban waterway and the primary...
Cape Horn (Spanish: Cabo de Hornos, pronounced [ˈkaβo ðe ˈoɾnos]) is the southernmost headland of the Tierra del Fuego archipelago of southern Chile, and...
which are sounded all at once: the classic "air" siren, the electronic "yelp", and the European two-tone airhorns (sometimes newer vehicles are fitted with...