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Given the tonal design of the train whistle, the sound level, how often trains pass through a given community, the number of grade crossings in proximity, and the time of day (night) of occurrence, community residents residing near crossing sometimes feel that train whistles have a serious detrimental effect on the quality of life despite the ...
Train horns are sounded where a whistle post (marked with the letter "S" for siffler – "to whistle") is present. If the whistle post is labelled "J" (meaning jour – "day"), the horn is only to be sounded between 07:00 and 20:00. Horns must also be sounded when passing an oncoming train, and shortly before reaching the last car of the train.
A whistle is a quarter-wave generator, which means that a sound wave generated by a whistle is about four times the whistle length. If the speed of sound in the steam supplied to a whistle were 15936 inches per second, a pipe with a 15-inch effective length blowing its natural frequency would sound near middle C: 15936/(4 x
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
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.
The project was inspired by Segal's personal experience organizing a whistle-stop campaign tour for Republican U.S. Rep. Mickey Edwards of Oklahoma, for whom he was serving as press secretary in 1984.
On Fotoplayers specifically, most effects were created using leather cords, with wooden handles on the ends, directly connected to the effects. For example, the steamboat whistle sound effect was created using a household bellows with a whistle at the end. Pulling the cord compressed the bellows, delivering a gust of air into the whistle.
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 ...