Final answer:
Pitch is relative, as it involves the recognition of different frequencies of sound by the human ear. Most people can discriminate between pitches that vary by more than 0.3%, while individuals with perfect pitch can identify specific notes.
Step-by-step explanation:
It is indeed true that pitch is a relative concept. The perception of frequency is what we refer to as pitch. Our ability to discern pitch is based on our capacity to identify if one sound is of a different frequency than another. For example, sounds at 500.0 Hz and 501.5 Hz are distinguishable because they differ more than 0.3% in frequency, which is the typical threshold for human pitch discrimination. Perfect pitch is a unique ability where individuals can identify musical notes, like A-sharp, C, or E-flat, without any reference. In contrast, most of us have a refined sense of relative pitch, allowing us to recognize differences in pitch without necessarily naming the exact notes.