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A train horn is an air horn used as an audible warning device on diesel and electric-powered trains. Its primary purpose is to alert persons and animals to an oncoming train, especially when approaching a level crossing. They are often extremely loud, allowing them to be heard from great distances.
Several distinct sounds are created by various parts of the train, such as engines, traction motors, brakes, and the wheels rolling on the rails. Roughness and irregularities on the wheel and rail surfaces are a source of noise and vibration. Rail joints and squats on the rail cause a familiar "clickety-clack" sound as train wheels roll over them.
Spectrogram of the train sound. The Sea Train is the name given to a sound recorded on March 5, 1997, on the Equatorial Pacific Ocean autonomous hydrophone array. The sound rises to a quasi-steady frequency. According to the NOAA, the origin of the sound is most likely generated by a very large iceberg grounded in the Ross Sea, near Cape Adare. [10
As train whistles are inexpensive compared to other warning devices, the use of loud and distinct whistles became the preferred solution for railway operators. Steam whistles were almost always actuated with a pull cord (or sometimes a lever) that permitted proportional action, so that some form of "expression" could be put into the sound. Many ...
Le chemin de fer likely was the first musical representation of train departure and arrival.. In 1844, French classical pianist Charles-Valentin Alkan composed Le chemin de fer ("The Railroad"), a programmatic étude for piano designed to depict the happy journey of train passengers from departing a train station to portraying the train pulling into a second station.
A train song is a song referencing passenger or freight railroads, often using a syncopated beat resembling the sound of train wheels over train tracks.Trains have been a theme in both traditional and popular music since the first half of the 19th century and over the years have appeared in nearly all musical genres, including folk, blues, country, rock, jazz, world, classical and avant-garde.
They can be used in place of, or in addition to, the locomotive's horn as the train approaches the crossing. They are often used in special railroad "quiet zones" in the United States, where the engineer is not required to sound the locomotive's horn at a crossing. This reduces the ambient noise at the crossing, which may be desirable in ...
The sound is used on trailers for THX-certified movie theaters, home video releases, video games, and in-car entertainment systems. The Deep Note was partially previewed on the opening track of the 1983 album The Digital Domain: A Demonstration, where it was included among sound effects that were combined with the Deep Note itself.