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110 minutes. Country. South Korea. Language. Korean. Box office. US$7.2 million [1] [2] Decibel ( Korean : 데시벨) is a 2022 South Korean espionage action thriller film directed by Hwang In-ho, starring Kim Rae-won, Lee Jong-suk, Jung Sang-hoon, Park Byung-eun and Cha Eun-woo. It was released on November 16, 2022.
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 ).
dBm or dBmW (decibel-milliwatts) is a unit of power level expressed using a logarithmic decibel (dB) scale respective to one milliwatt (mW). It's a quick-and-dirty metric commonly used by radio, microwave and fiber-optical communication technicians & engineers to measure the power of system transmissions on a log scale, which can express both ...
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The sound energy density level gives the ratio of a sound incidence as a sound energy value in comparison to the reference level of 1 pPa (= 10 −12 pascals). [2] It is a logarithmic measure of the ratio of two sound energy densities. The unit of the sound energy density level is the decibel (dB), a non-SI unit accepted for use with the SI ...
Portal (band) Portal is an Australian extreme metal band whose style is an unorthodox fusion of death metal, black metal, dark ambient and experimental music. [1] The band's hybrid musical style is characterised by heavily distorted guitar riffs, down-tuned rhythms, and vocals ranging from "menacing, echoing" sound effects to death grunts .
Sound exposure level (SEL) is a logarithmic measure of the sound exposure of a sound relative to a reference value. where. 20 ln 10 is the decibel. The commonly used reference sound exposure in air is [2] The proper notations for sound exposure level using this reference are LW/ (400 μPa2⋅s) or LW (re 400 μPa2⋅s), but the notations dB ...
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