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  2. Train whistle - Wikipedia

    en.wikipedia.org/wiki/Train_whistle

    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 ( tracker ) action, so that some form of "expression" could be put into ...

  3. Train horn - Wikipedia

    en.wikipedia.org/wiki/Train_horn

    They are often extremely loud, allowing them to be heard from great distances. They are also used for acknowledging signals given by railroad employees, such as during switching operations. For steam locomotives, the equivalent device is a train whistle. Leslie RS3L locomotive horn, once the most common horn in use on North American railroads

  4. Steam whistle - Wikipedia

    en.wikipedia.org/wiki/Steam_whistle

    The variable pitch steam whistle at the New York Wire Company in York, Pennsylvania, was entered in the Guinness Book of World Records in 2002 as the loudest steam whistle on record at 124.1dBA from a set distance [clarify] used by Guinness. [84] The York whistle was also measured at 134.1 decibels from a distance of 23-feet. [12]

  5. List of unexplained sounds - Wikipedia

    en.wikipedia.org/wiki/List_of_unexplained_sounds

    While the audio profile of Bloop does resemble that of a living creature, [4] the source was a mystery both because it was different from known sounds and because it was several times louder than the loudest recorded animal, the blue whale. [5] The NOAA Vents Program has attributed Bloop to a large icequake. Numerous icequakes share similar ...

  6. City addresses train whistle complaints - AOL

    www.aol.com/news/city-addresses-train-whistle...

    Oct. 4—The city of Cullman addressed a number of resident complaints it received regarding train whistles interrupting last weekend's Oktoberfest festivities during its council meeting on Monday ...

  7. Train noise - Wikipedia

    en.wikipedia.org/wiki/Train_noise

    Rail squeal is a sound caused by a train's wheels slipping under specific conditions, usually around sharp curves. [4] Air displacement of a train in a tunnel can create noise from turbulence. Trains also use horns, whistles, bells, and other noise-making devices for both communications and warnings.

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