From what I understand, virtual pitch is a concept that is supposed to account for the "missing fundamental" phenomenon. Specifically,
A harmonic sound is said to have a missing fundamental when its overtones suggest a fundamental frequency but the sound lacks a component at the fundamental frequency itself. The brain perceives the pitch of a tone not only by its fundamental frequency, but also by the periodicity implied by the relationship between the higher harmonics. Source: https://en.m.wikipedia.org/wiki/Missing_fundamental
Can someone explain what virtual pitches are and how this explains why the missing fundamental phenomenon occurs?