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How do you double decibels?

Updated: 8/11/2023
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11y ago

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When doubling the field quantity factor by 2 the level increases by 6 dB.

When doubling the energy quantity factor by 2 the level increases by 3 dB.

When doubling the sound pressure value by 2 the level increases by 6 dB.

When doubling the sound intensity value by 2 the level increases by 3 dB.

The decibel (dB) is a logarithmic unit that indicates the ratio of a physical quantity relative to a specified or implied reference level.

You usually don't double decibels - you double the factor (ratio).

Look at the link "Subjectively perceived loudness (volume), objectively measured sound pressure (voltage), and theoretically calculated sound intensity (acoustic power)".

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11y ago
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12y ago

No, doubling the decibels is wrong.

Total Intensity = I1 + I2.

Doubling of sound intensity corresponds to a level change of 3 dB.

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Q: How do you double decibels?
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What is the equivalent db level when listening to earphone or headphone volume?

dB is short for Decibel, or one tenth of a bel. Bels and decibels are unlike any other measurement, because an addition of ten means double the loudness of the noise. For example: 60 decibels is the noise generated from a regular conversation, however, 70 decibels is double the noise; and 80 is double that.


Why is the abbreviation for decibels dB?

DeciBels


Does voltage current or power affect volume in a speaker?

Power (Watts)/ Decibels (if the speaker is efficient) 2 Watts = 93 decibels 4 Watts = 96 decibels 8 Watts = 99 decibels 16 Watts = 102 decibels 32 Watts = 105 decibels 64 Watts = 108 decibels 128 Watts = 111 decibels 256 Watts = 114 decibels 512 Watts= 117 decibels 1024 Watts = 120 decibels Some Volumes to Compare 10 decibels = normal human breathing 60 decibels = normal human conversation 110 decibels = power saw, car horn, shouting in ear, 120 decibels = jet aircraft close by, emergency vehicle siren, rock concert


What do decibels change in?

do decibels change to wavelength


How many decibels is a whisper?

20 decibels


How many decibels is a pigs squeal?

207 decibels.


Decibels are a measuremeant of what?

Decibels are a measurement of the loudness of sound.


What is the symbol for decibels?

The usual symbol for decibels is dB.


Which is sound measured by watts meters amps or decibels?

Decibels


When was Stands for Decibels created?

Stands for Decibels was created in 1980.


What is the abbreviation used for decibels?

The abbrevation used for decibels is dB.


How many decibels does a cough produce?

70-100 decibels