Pitch is the quality of a sound governed by the rate of vibrations producing it; the degree of highness or lowness of a tone.
Pitch is a perceptual property of sounds that allows their ordering on a frequency-related scale,or more commonly, pitch is the quality that makes it possible to judge sounds as "higher" and "lower" in the sense associated with musical melodies. Pitch can be determined only in sounds that have a frequency that is clear and stable enough to distinguish from noise.Pitch is a major auditory attribute of musical tones,
Pitch is an auditory sensation in which a listener assigns musical tones to relative positions on a musical scale based primarily on their perception of the frequency of vibration