How loud is a decibel?

Answer:
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.
First answer by Alcohen2006. Last edit by Alcohen2006. Contributor trust: 1141 [recommend contributor recommended]. Question popularity: 1 [recommend question].