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The speed of sound in steam is predictable if steam dryness is known. [45] Also, the specific volume of steam for a given temperature decreases with decreasing dryness. [46] [39] Two examples of estimates of speed of sound in steam calculated from whistles blown under field conditions are 1,326 and 1,352 feet per second. [47]
North American steam locomotive whistles have different sounds from one another. They come in many forms, from tiny little single-note shriekers to larger plain whistles with deeper tones (a deep, plain train whistle is the "hooter" of the Norfolk & Western, used on their A- and Y-class Mallet locomotives). Even more well known were the multi ...
Listening to the York Factory Whistle Concert early Christmas morning has been a tradition for generations. The concert, which features eerie-sounding holiday songs, is set for 12:10 a.m. on Dec ...
Steam whistles were also used as a warning device if a supply of steam was present, such as a sawmill or factory. These were common before fire sirens became widely available, particularly in the former Soviet Union. Fire horns, large compressed air horns, also were and still are used as an alternative to a fire siren.
Sound Ideas is a Canadian audio company and the archive of one of the largest commercially available sound effects libraries in the world. [2] [3] It has accumulated the sound effects, which it releases in collections by download or on CD and hard drive, through acquisition, exclusive arrangement with movie studios, [4] and in-house production.
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No one was injured, but the factory suffered major damage. Air Raid Precautions whistles were made during the next few years and dated whistles for army, navy and Royal Air Force equipment and for Civil Defence. In 1949 the firm was re-constituted as J. Hudson & Co. (Whistles) Ltd. Leon C. Hudson became its first managing director.
Hancock offered three different models of their air whistle. The most common was the 4700, which consisted of the whistle along with a large, rectangular bowl in the same plane as the languid plate. This bowl, or reflector, is used to project the sound of the whistle ahead of the locomotive, instead of omnidirectional as in the case of most ...