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204 pages, Kindle Edition
First published January 1, 2010
"Now we have a system that can be used to measure loudness from the quietest noise to the loudest which only goes from zero to 120. But I’m afraid that even though the numbers are now simple, the use of this scale is complicated. The table shows that each time the loudness of the noise doubles, you add 10 decibels. This sounds simple enough until you realize that this means that not only is 20dB twice as loud as 10dB (which seems obvious) but also that 90dB is twice as loud as 80dB (which seems crazy, but it’s true—just look at the table).
At this point I must come clean and admit that I don’t like the decibel system of loudness measurement at all. It isn’t easy to use even if you have studied math or physics up to college level. Even a professional scientist would need a calculator and a few minutes to be able to tell you the difference in loudness between 53 decibels and 87 decibels. I have no proof of this, but I think the decibel was invented in a bar, late one night, by a committee of drunken electrical engineers who wanted to take revenge on the world for their total lack of dancing partners..."