Topic: Decibels Calculations
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Answers to Common Questions
How to Calculate Decibels in Intensity
A decibel is a unit of sound intensity expressed on a logarithmic scale. The intensity (I) in decibels is given with the following equation: I (dB) = 10 x Log(I/Io). "Io" denotes the threshold of hearing that is 10^-12 watts / square meter;... Read More »
Source: http://www.ehow.com/how_6057208_calculate-decibels-intensity.html
How to Calculate Decibels
A decibel is a unit of measure of the ratio between two numbers and is used to measure power, voltage gain, sound pressure level and loudness. The most common measurements for power are watts and ohms. To calculate power measurements in dec... Read More »
Source: http://www.ehow.com/how_5175513_calculate-decibels.html
How to Calculate the Decibel Level
The decibel level is a measure of sound intensity in reference to the minimum audible human sound. The higher the decibel level of a sound is, the louder it is. A sound that is 0 decibels is just barely audible. On the other hand, an 85 dec... Read More »
Source: http://www.ehow.com/how_6387974_calculate-decibel-level.html
More Common Questions
Answers to Other Common Questions
Decibel levels of everyday noises are easy to gauge once you know a few simple guidelines. Decibel levels vary according to how close you are to an object making noise. According to the Children's Hearing Institute, we experience decibel le...
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Source: http://www.ehow.com/how_6390965_calculate-decibel-level-distances...
Decibels and acoustic power are two closely related measures of sound. Acoustic power is the amount of energy a sound wave transmits per unit area in a specific direction. Decibels measure the intensity of sound according to a logarithm of ...
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Source: http://www.ehow.com/how_12119843_calculate-decibels-relative-acou...
The decibel is a ratio of quantities and can be used to express the ratio of two powers. The decibel watt is a unit of measurement for a power ratio, and power can be calculated from a known current and resistance. The standard units of mea...
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Source: http://www.ehow.com/how_5150215_calculate-decibels-through-watts-...
I believe the equation is Db = 160 + 10 log I , I = intensity a) 27 = 160 + 10 log I ---> log I = -13.3 ---> log (8I) = log I + log 8 Db = 160 +10 [ -13.3] + 10 log 8 = 36 b) 80 = 160 + [-133] +10 log K ---> K = 10 ^(5.3) 85 = 160 -133 + 10...
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Source: http://answers.yahoo.com/question/index?qid=20100619193111AA5ajkH
Decibels is a logarithmic scale, like the Richter scale for earthquakes and the luminous magnitude scale for star brightness. Zero is the faintest sound most people can hear, which is assumed to be 10^ -16 watts per square metre of sound . ...
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Source: http://answers.yahoo.com/question/index?qid=20060625001654AASzEQP
you have to convert them to intensities first, then average, then convert the average back to dB dB = 10 log i or i = 10^(dB/10) Set it up in a spreadsheet and let excel do the work. BUT, since sound is log based, as that's the way our ears...
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Source: http://answers.yahoo.com/question/index?qid=20100419114042AAQrEFM
I think you have to convert to actual numbers instead of dB which is a log. Relative to 80 dB these are 4.9, 2.3, 1.1, 7.4, 5.7 take each one, divide by 10 and raise 10 to that power. those numbers are 3.09, 1.70, 1.29, 5.50, 3.72 averaging...
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Source: http://answers.yahoo.com/question/index?qid=20100116114011AA8uJUA
