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What is the speed of sound?

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From what I know, the speed of sound is proportional to it's pressure in an ideal gas but inversely proportional to it's density. Say you doubled the amount of helium within a room. You have doubled the pressure but also doubled the density. Since 2/2 is 1, NO net change in speed of sound through the medium is achieved. read more

The speed of sound is the distance travelled per unit time by a sound wave as it propagates through an elastic medium. In dry air at 0 °C (32 °F), the speed of sound is 331.2 metres per second (1,087 ft/s; 1,192 km/h; 741 mph; 644 kn). read more

The speed of sound varies depending on the temperature of the air through which the sound moves. On Earth, the speed of sound at sea level — assuming an air temperature of 59 degrees Fahrenheit (15 degrees Celsius) — is 761.2 mph (1,225 km/h). read more

The speed of"sound" is actually the speed of transmission of a small disturbance through a medium. Sound itself is a sensation created in the human brain in response to sensory inputs from the inner ear. read more

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Speed of Sound
Source: grc.nasa.gov

Further Research

Speed of Sound (video)
www.khanacademy.org

The Physics Classroom
www.physicsclassroom.com

What Is the Speed of Sound
www.livescience.com