デシベル
1. decibel; dB
2. DecibelThe decibel (dB) is a logarithmic unit that indicates the ratio of a physical quantity relative to a specified or implied reference level. A ratio in decibels is ten times the logarithm to base 10 of the ratio of two power quantities. A decibel is one tenth of a bel, a seldom-used unit. The decibel is used for a wide variety of measurements in science and engineering, most prominently in acoustics, electronics, and control theory.
Read “Decibel” on English Wikipedia
Read “デシベル” on Japanese Wikipedia
Read “Decibel” on DBpedia
Read “Decibel” on English Wikipedia
Read “デシベル” on Japanese Wikipedia
Read “Decibel” on DBpedia
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