Information - and disinformation!
There are a huge number of on-line guides to decibels, ranging from a one-line formula to the most detailed discussion - and all of them assume a certain level of mathematics knowledge. Just for fun, I decided to try to write an explanation that could be understood by people with only the most basic maths.
There is a lot of confusing information about acoustics, both on-line, and in various other media. I'm putting a few of my favourite annoyances here.
Soundproofing Is there such a thing?
50% reduction in sound! Is it as impressive as it looks?