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@xxxxxxxxxxxxx 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. > >
