A calliope (see below for pronunciation) is an American and Canadian musical instrument that produces sound by sending a gas, originally steam or, more recently, compressed air, through large whistles—originally locomotive whistles.
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In addition to rolling noise, curve squeal (a high-pitched 'screeching' noise produced by trains when negotiating narrow-radius curves and switches) is a major source of local noise nuisance caused by railways.
Train Whistle: With this wooden whistle you can play three different tones which together sound like a train signaling that it is approaching. We use the train whistle as a sound effect in stories and for songs about trains.
The blast of the train whistle under temperature inversion conditions can to bend upward, traveling quickly through the warm air high above the ground before spreading downward through the cool air closer to the ground and into your ear through an open bedroom window.