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Re: db Level Question

To: "Jim Ourand" <racenumbers@cox.net>, <autox@autox.team.net>
Subject: Re: db Level Question
From: "Jay Mitchell" <jemitchell@compuserve.com>
Date: Thu, 24 Oct 2002 20:21:47 -0500
Jim Ourand queried:

>If a sound is 7db over "stock" is that a significant increase?

Umm, yep. A 3 dB increase represents a doubling of the acoustic
power radiated by the source. A 10 dB increase is generally
characterized as "twice as loud," based on subjective studies.

A 7 dB increase in sound pressure level (SPL) is a substantial
one, but most folks would say that it's not twice as loud as it
was before.

Jay

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