Outdoor sound propagation or atmospheric sound propagation is of special interest in environmental acoustics which is concerned with the control of sound and vibrations in an outdoor environment. Outdoor sound propagation is affected by spreading, absorption, ground configuration, terrain profile, obstacles, pressure, wind, turbulence, temperature, humidity, etc. The subjects covered in this page are speed of sound in air, decibel scales, spreading losses, attenuation by atmospheric absorption, attenuation over the ground, refraction, diffraction and sound reduction examples.
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