Subject: Re: [linux-audio-user] measuring sound volume
From: Steve Harris (S.W.Harris_AT_ecs.soton.ac.uk)
Date: Wed Mar 17 2004 - 01:03:52 EET
Yup, all very true, which is why I said rule of thumb, but even that may
be too strong :)
- Steve
On Tue, Mar 16, 2004 at 02:08:27 -0800, davidrclark_AT_earthlink.net wrote:
> Regarding the inverse square law: Be careful!
>
> This law applies to idealized situations such as point sources in isotropic,
> homogeneous media. For a speaker in a tunnel, for example, it does not hold
> true. Speakers have radiation patterns as do electromagnetic devices such as
> antennae. Boundaries are also important. You will also have interference
> effects, etc. I would anticipate that the inverse square law to be quite
> inaccurate, but being outside will help. I love theory myself, but this
> situation calls for the voice of experience. (Now if that voice says,
> "Always use the inverse square law," please let me know.) The best thing
> I can think of from a theoretical perspective (sort of) is to obtain the
> speaker patterns if you can.
>
>
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