[W126 Coupe] Becker & Speakers for sale

[Dan Landiss]

on 9/11/2006 3:18 PM Axel Wulff wrote:

> Not to nitpick, but db is measured on a log scale

That is correct.

> and a difference in 3 db means that the sound level to a listener is 
> double/half, depending on which way you go.

No, one of the reasons a log scale was chosen was that twice as much 
power does NOT sound twice as loud. It is generally accepted that the 
average listener can perceive a 1 dB change in a steady, pure tone; and 
a 3 dB change in more complex waveforms.

> I.e to go from 90 db to 93 db takes twice the amplification power

Yes

> and will sound twice as loud.

No, a just perceptible difference. Some sources say a 10 dB increase is 
twice as loud, t everyone agrees on that number. It might be higher in 
the case of music.

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