Wave speed is a
wave property, which may refer to
absolute value of:
-
phase velocity, the velocity at which a wave phase propagates at a certain frequency
-
group velocity, the propagation velocity for the envelope of wave groups and often of wave energy, different from the phase velocity for dispersive waves
-
signal velocity, or information velocity, which is the velocity at which a wave carries information
-
front velocity, the velocity at which the first rise of a pulse above zero moves forward
