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Q. |
Which of the following is the unit of perceived loudness of sound? |
A. | Decibel |
B. | Sone |
C. | Hertz |
D. | Phon |
Answer» B. Sone | |
Explanation: Loudness is a subjective characteristic of a sound (as opposed to the sound-pressure level in decibels, which is objective and directly measurable). Perceived loudness of sound is a psycho-acoustic quantity that depends on sound pressure level, the frequency spectrum, and the time behavior of the sound in question. |
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