The Loudness of Sound (L, Measured in Decibels) Perceived by the Human

question 104

Multiple Choice

The loudness of sound (L, measured in decibels) perceived by the human ear depends on intensity levels (I) according to , where is the standard threshold of audibility. If then using the change-of-base formula, we get . At what rate is the loudness changing with respect to x when the intensity is 1,000 times the standard threshold of audibility (that is, when x = 1,000) ? ​

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