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The speed of sound varies depending on the temperature, pressure, and density of the medium through which the sound waves travel. For dry air at sea level at 68° F, the speed of sound is 767 miles per hour, or 1235 km/h

en.wikipedia.org/wiki/Speed_of_sound

The approximate speed of sound in dry (0% humidity) air, ... This equation is derived from the first two terms of the ...

www.physicsclassroom.com/class/sound/Lesson-2/The-Speed-of-Sound

At normal atmospheric pressure, the temperature dependence of the speed of a sound wave through dry air is approximated by the following equation: ...

www.engineeringtoolbox.com/speed-sound-d_82.html

Calculation formulas for velocity of sound - sonic velocity - in gases, fluids or solids.

hyperphysics.phy-astr.gsu.edu/hbase/Sound/souspe3.html

The speed of sound in an ideal gas is given by the relationship ... 332.00 m/s. This leads to a commonly used approximate formula for the sound speed in air: ...

www.nde-ed.org/EducationResources/HighSchool/Sound/tempandspeed.htm

v is the speed of sound and T is the temperature of the air. One thing to keep in mind is that this formula finds the average speed of sound for any given ...

hyperphysics.phy-astr.gsu.edu/hbase/Sound/souspe.html

This calculation is usually accurate enough for dry air, but for great precision one must examine the more general relationship for sound speed in gases.

www.grc.nasa.gov/www/k-12/airplane/sound.html

Air is a gas, and a very important property of any gas is the speed of sound through the gas. Why are we interested in the speed of sound? The speed of " sound" ...