| Noise Pollution and Control Strategy | , A Textbook of Sound Bell, London, 1946• The Darkest Days of the War: the Battles of Iuka and Corinth |
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| Engineering Noise Control, Theory and Practice | Noise Pollution and Control Strategy |
As wind speed generally increases with altitude, wind blowing towards the listener from the source will refract sound waves downwards, resulting in increased noise levels.
| Chapel Hill: The University of North Carolina Press | It may be seen that refraction effects occur only because there is a wind gradient and it is not due to the result of sound being convected along by the wind |
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| Full Meridian of Glory: Perilous Adventures in the Competition to Measure the Earth | Government Printing Office, Washington, D |
Full Meridian of Glory: Perilous Adventures in the Competition to Measure the Earth.
22| As wind speed generally increases with altitude, wind blowing towards the listener from the source will refract sound waves downwards, resulting in increased noise levels | |
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