What are the properties of sound waves?

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Answer 1 · 2015-10-14T18:22:45

sound waves are mechanical waves so they need a medium for propagation.

The most fundamental properties of sound waves are:-
1. Wavelength
2. Frequency
3. Amplitude

Most of the other properties like speed,intensity etc. can be calculated from the above three quantities.

Answer 2 · 2015-10-14T18:23:10

I have listed some below

They are longitudinal in nature - that means the disturbances are parallel to the direction of motion of the wave.
The cannot travel through a vacuum. They need a medium to travel through.
They travel fastest through solids and slowest through gases.
They obey the wave equation $v=f lambda$ and their speed through air at sea level is approximately $340 m//s$
They can be reflected and obey the law of reflection.
They can be refracted, diffracted, undergo superposition (interference), etc.
Their frequencies may appear different to observers in relative motion due to the Doppler Effect.