On Jun 27, 2007, at 10:54 PM, Cedric Chang wrote:

> Low frequency can transfer itself through solid materials by
> vibrating them, while high frequencies are much more attenuated.
>
But it's more than that, isn't it?  I thought drums were pretty
good sources of broad-spectrum audio frequencies; so no matter
what frequencies are optimal over the path between you and the
source, the drums will come through...

BillW
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