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Speed of sound in air

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Speed of sound in air diagram
The standard equation of V=331.3×(1+(temp/273.15)^0.5) is used to estimate the speed of sound in air at various temperatures.

Speed of sound in air:
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Since the speed of sound does not vary significantly with pressure over the range found in most of the atmosphere, it is enough to take temperation into account in order to provide a reasonably accurate speed of sound for most applications. Deviations appear where the composition of the air (including by saturation with water) differs from the norm.