What is the sound at sea level speed?

Answer 1

The speed of sound is normally calculated using the values of a "standard atmospheric day." A "standard atmospheric day" refers to a sea level pressure of 29.92 in-Hg (1013.2 mb) and a temperature of 15°C (59°F). At standard day values, the speed of sound is 761 mph. Other speeds, such as those presented below, use values other than those relating to a "standard atmospheric day." They are not incorrect, they are simply based on values other than a "standard atmospheric day."

The speed of sound is 343 m/s or 1126.547 ft/s (768.095 mph) at a temperature of 20°C or 68°F.

The speed of sound has nothing to do with the atmospheric pressure at sea level, but the temperature is very important.

Scroll down to related links and read the short article "Speed of sound - temperature matters, not air pressure".

The air pressure and the air density are proportional to each other at the same temperature.

The speed of sound c depends on the temperature of air and not on the air pressure!

The humidity of air has some negligible effect on the speed of sound. The air pressure

and the density of air (air density) are proportional to each other at the same temperature.

It applies always p / ρ = constant. rho is the density ρ and p is the sound pressure.

Notice: The speed of sound is alike on a mountain top as well as at sea level with the same air temperature.

Google is not correct (look at the following link):

http://www.Google.com/search?q=speed+of+sound+at+sea+level

Here is the answer of Google: "Speed of sound at sea level = 340.29 m/s".

This is no good answer, because they forgot to tell us the temperature,

and the atmospheric pressure "at sea level" has no sense.

The speed of sound in air is determined by the air itself. It is not dependent upon the sound amplitude, frequency or wavelength.