Which of the following does NOT describe a perceptual characteristic of sound?

Question

BlackTom AI · Accepted Answer

To tackle this question, I’ll examine what each option represents in the context of sound characteristics.
Option a: fidelity. Fidelity is often discussed in terms of the accuracy or faithfulness of a sound reproduction or recording, which relates to perceptual quality listeners judge when comparing signals to a reference. It is considered a perceptual evaluation of sound, though it is about how well the sound preserves original content.
Option b: amplitude. Amplitude is a physical property of a sound wave—the size of the pressure variation—and does not, by itself, denote a perceptual quality. While larger amplitude tends to be perceived as louder, amplitude is not a perceptual attribute per se; it is an acoustic measurement that influences perception rather than a perceptual descriptor itself.
Option c: pitch. Pitch is a fundamental perceptual attribute corresponding to the frequency of the sound as heard by the listener; it is clearly a perceptual characteristic.
Option d: loudness. Loudness is the perceived magnitude of a sound, a direct perceptual attribute that depends on amplitude but is described in perceptual terms, not a physical measurement alone.
Option e: quality. In musical and psychoacoustic contexts, ‘quality’ (often referring to timbre) describes the color or characteristic of a sound beyond pitch and loudness, which is a perceptual attribute of what distinguishes different sounds with the same pitch and loudness.
Taking these distinctions together, amplitude is the one option that is a physical parameter rather than a perceptual characteristic, making it the statement that does NOT describe a perceptual characteristic of sound according to the framing of the question.

FIC 202501 CA135_CASM CH09 QUIZ

Which of the following does NOT describe a perceptual characteristic of sound?

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