The statement is not correct. The combination of an incoming wave and a reflected wave does not necessarily result in the formation of a standing wave. Standing waves are formed when the incoming and reflected waves have the same frequency and amplitude, and the boundary conditions are such that the waves interfere constructively at certain points and destructively at others.

The frequency of a wave is determined by the number of oscillations it makes per second, and it has no direct relationship to the formation of standing waves. Waves of any frequency can form standing waves, provided the other necessary conditions are met.

In summary, the formation of standing waves depends on the specific characteristics of the incoming and reflected waves, such as their frequency, amplitude, and the boundary conditions, rather than simply whether they have a high or low pitch.