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How loud is a decibel?


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A decibel isn't a definite amount of anything. It's a unit used to compare

two powers.

1 decibel more = 25.89% more power

3 decibels more = twice as much power

3 decibels less = half as much power

10 decibels more = 10 times as much power

10 decibels less = 0.1 as much power

20 decibels more = 100 times as much power

You don't know how much any number of decibels is until you know

what it's compared to.