Seems like we should use a "C" weighting.
Matt Murray
-----Original Message-----
From: Jay Mitchell [SMTP:jemitchell@compuserve.com]
<mailto:[SMTP:jemitchell@compuserve.com]>
Sent: Tuesday, October 02, 2001 12:01 PM
To: Matthew D. Murray
Cc: Evolution-Discussions (E-mail)
Subject: Re: Fairfield County Sports Car Club Event Oct. 28th
(Connecticut)
Matt Murray wrote:
> So if we want to be cautious, perhaps we should be using "C."
Definitely.
> Well > transmitted low frequencies (as well as high freqs.) could
annoy the locals. > True?
Definitely. I think we can safely say that the "boom-car" phenomenon annoys
some folks (can't imagine why ;<), and there's very little sound above 100
Hz being radiated outside the car by stereos of this persuasion.
> Relying on a neighbor who can only hear 1k to 3k might be a bit
> risky. :^)
"A" weighting doesn't _eliminate_ low frequencies, it just gives them less,
well, weight. However, almost any broadband noise source will produce higher
SPL measured with "C" weighting than with "A." So "C" weighting is the
"safest" from the POV of neighborhood annoyance, but a bit more difficult
wrt muffling requirements.
Jay
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