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The decibel, or dB, is a means of expressing the gain of an active device (such as an amplifier) or the loss in a passive device (such as an attenuator or length of cable). It is simply the ratio (!) of output to input expressed in logarithmic form. The decibel was developed by the telephone company to express the gain or loss in telephone transmission systems.
Sound intensity (sound energy quantity):
Reference sound intensity Io = 10^−12 W/m² (Threshold of hearing)
Reference sound intensity level LIo = 0 dB-SIL (Threshold of hearing level)
Get sound intensity I when entering sound intensity level LI:
Sound intensity I = Io×10^(LI/10) W/m² = 10^−12×10^(LI/10) W/m².
Get sound intensity level LI in dB when entering sound intensity I in W/m²:
Sound intensity level LI = 10×log (I / Io) dB = 10×log (I / 10^−12) dB.
Sound pressure (sound field quantity):
Reference sound pressure po = 20 µPa = 2×10^−5 Pa (Threshold of hearing)
Reference sound pressure level Lpo = 0 dB-SPL (Threshold of hearing level)
Get sound pressure p when entering sound pressure level Lp:
Sound pressure p = po×10^(Lp/20) Pa or N/m² = 2×10^−5×10^(Lp/20) Pa.
Get sound pressure level Lp in dB when entering sound pressure p in Pa:
Sound pressure level Lp = 20×log (p / po) dB = 20×log (p / 2×10^−5) dB.
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How do you convert sone to decibel?
To convert sone to decibel, you can use the formula: Decibels (dB) = 40 log(sone) For example, if the loudness level is 4 sones, the equivalent decibel level would be 40 log(4) ≈ 60 dB.
How is decibel abbreviated?
Decibel is abbreviated as "dB."
Why d in small in decibel?
The "d" in decibel represents Alexander Graham Bell, who was an influential scientist in the development of the decibel scale. The decibel scale is used to quantify the intensity of sound or the power level of an electrical signal on a logarithmic scale.
Unit of measuring loudness of sound is called?
The unit of measuring loudness of sound is called the decibel (dB). The decibel scale is logarithmic and is used to compare the intensity of different sounds.
How much louder is a 60 decibel sound than a 40 decibel sound?
A 60 decibel sound is 10 times louder than a 40 decibel sound. Decibels follow a logarithmic scale, where an increase of 10 decibels represents a sound that is perceived as being 10 times more intense.
How do you convert sone to decibel?
To convert sone to decibel, you can use the formula: Decibels (dB) = 40 log(sone) For example, if the loudness level is 4 sones, the equivalent decibel level would be 40 log(4) ≈ 60 dB.
What is the Welsh for 'decibel'?
The Welsh word for 'decibel' is desibel.
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
How is decibel abbreviated?
Decibel is abbreviated as "dB."
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.
