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The decibel (symbol: dB) is a relative unit of measurement equal to one tenth of a bel (B). It expresses the ratio of two values of a power or root-power quantity on a logarithmic scale. Two signals whose levels differ by one decibel have a power ratio of 10 1/10 (approximately 1.26) or root-power ratio of 10 1/20 (approximately 1.12).
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Decibel (dB) is a unit for measuring the ratio of two physical quantities, usually power or intensity, or the relative loudness of sounds. Learn how decibels are calculated, used, and related to other units such as bel and roentgen.
Sep 7, 2023 · Decibels are the units used to measure sound intensity and other types of energy. Learn how decibels are calculated, what sounds are at different decibel levels, and how to protect your hearing from noise-induced damage.
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Learn what decibel is, how to calculate it, and why it is used to measure sound intensity. Explore the decibel scale, noise level chart, and decibel meter with examples and interactive video lessons.
Decibel (dB) definition. Decibel (Symbol: dB) is a logarithmic unit that indicates ratio or gain. Decibel is used to indicate the level of acoustic waves and electronic signals. The logarithmic scale can describe very big or very small numbers with shorter notation.
