The distance over which the wave's shape repeats is known as wavelength. The freaquency is defined as the rate of viberation of sound traveling through air , on the other hand the term velocity shows the speed in a given direction and its magnitude.

A single frequency traveling wave will take the form of a sine wave. A snapshot of the wave in space at an instant of time can be used to show the relationship of the wave properties frequency, wavelength and propagation velocity.

The motion relationship "distance = velocity x time" is the key to the basic wave relationship. With the wavelength as distance, this relationship becomes λ = vT. Then using f=1/T gives the standard wave relationship

V= fλ Calculation

This is a general wave relationship which applies to sound and light waves, other electromagnetic waves, and waves in mechanical media.