Encyclopedia.com - Results for decibel

decibel
(dB), unit of sound intensity. The faintest audible sound is arbitrarily assigned a value of 0 dB, and the loudest sounds that the human ear can tolerate are about 120 dB. The difference in decibels between any two sounds is equal to 10 log10 (P1/P2), where P1 and P2 are the two power levels.

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JAPANESE WOMAN YELLS TO WIN YEAR END YELLING CONTEST IN TOKYO ; Reuters News Pictures Service KIMIMASA MAYAMA; 12-15-1998; Size: 1K

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	Relevancy: 100; Date: 05-04-1999 Reading Level: 7.	Sustained sounds can end in silence ; USA Today ; 05-04-1999	Size: 3K

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	Relevancy: 100; Date: 01-01-1993 Reading Level: 13.	noise pollution ; The Columbia Encyclopedia, Fifth Edition ; 01-01-1993	Size: 4K

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