A decibel, named for Alexander Graham Bell, is the smallest increase of the loudness of sound that

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A decibel, named for Alexander Graham Bell, is the smallest increase of the loudness of sound that is detectable by the human ear. In physics, it is shown that when two sounds of intensity I1 and I2 (watts/cm3) occur, the difference in loudness is D decibels, where


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When sound is rated in relation to the threshold of human hearing (I0 = 10−12), the level of normal conversation is about 60 decibels, while a rock concert may be as loud as 110 decibels.


a. How much more intense is the rock concert than normal conversation?


b. The threshold of pain is reached at a sound level roughly 10 times as loud as a rock concert. What is the decibel level of the threshold of pain?

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Calculus For Business, Economics And The Social And Life Sciences

ISBN: 9780073532387

11th Brief Edition

Authors: Laurence Hoffmann, Gerald Bradley, David Sobecki, Michael Price

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