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A decibel (dB) has meaning only when compared a quantity (P1, V1, or I1) with a reference (P0, V0, or I0). Since it is a ratio of two like quantities, it is dimensionless.
For a power ratio, power gain = 10 * log10(P1/Po) in [dB].
For a voltage ratio, voltage gain = 20 * log10(V1/Vo) in [dB].
For example, when P1 = 100 * P0, the power gain = 10 * log10(100) [dB] = 20 dB.
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What type of scale is the decibel scale?
The decibel scale is a logarithmic scale. Scroll down to related links and look at "Decibel - Wikipedia" and "Sound level meter - Wikipedia".
You multiply or dividing the decibels by the decibels?
There is no point in doing either one of these. A decibel, being the log of a ratio, is added to or subtracted from another decibel.
What instrument measures the volume of sound?
a decibel meter.
What is the decibel a unit of?
Decibel is no real unit, it is a pseudo unit. The decibel (dB) is a logarithmic unit that indicates the ratio of a physical quantity. A change in voltage ratio by a factor of two is approximately a 6 dB change. A change in power ratio by a factor of two is approximately a 3dB change.
What is the recommended decibel level for the human ear?
60 i think
What are the uses of DECIBEL?
What are the uses of DECIBEL?
How do you use the word decibel in a sentence?
How do you use the word decibel in a sentence?What is decibel used for?
How is the decibel abbreviated?
The abbreviation for decibel is dB.
What is the subunit of Decibel?
The bell is a large unit, so a subunit, a decibel, is usually used. There is no subunit of decibel.
What is a decibel in terms of sound?
A decibel is a measure for sound.
What is another word for decibel?
another name for decibel
What is the Welsh for 'decibel'?
The Welsh word for 'decibel' is desibel.
What does a decibel have to do with sound?
A decibel is the unit of measuring the level of sound.
When was Doctor Decibel created?
Doctor Decibel was created in 1986.
When was Miss Decibel created?
Miss Decibel was created in 1987.
What is the decibel of a car horn?
What is the decibel level of a car horn?
What is 36 decibel?
'decibel' means power level compared to something else. +36 dB = 3,981 times as much power as whatever it's compared to.
