Pitch is a subjective perceptual judgment requiring a human listener to measure.

Evidence

Pitch relates to the perceived position of a sound on a scale from low to high, and its formal definition by the American National Standards Institute (1960) is couched in these terms as: “pitch is that attribute of auditory sensation in terms of which sounds may be ordered on a scale extending from low to high.” The measurement of pitch is therefore “subjective” because it requires a human listener (the “subject”) to make a perceptual judgment. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 824

Categorization

• DEFINE: Defines pitch per the ANSI standard and foregrounds its subjective nature.
• XREF: Echoes the psycho-acoustic theme that perception, not physics, is the object of study. — connects to: Pitch is a human synthesis keyed to autocorrelation, not pure physics; Pitch, though subjective, is measurable in Hz by matching against a sine wave — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 827; Pitch sensation can be derived by integrating just-noticeable frequency variations (+3 more)
• corroborated: 2 independent passages support this claim — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 824

Broader Connections

• Pitch is perceptual while frequency is acoustic, and not all sounds have pitch #corroborates (0.95)
• Pitch sensation can be derived by integrating just-noticeable frequency variations #exemplifies (0.75)
• Sound denotes both a physical wave and the subjective percept it evokes #corroborates (0.72)