From: "Randolph S. Little" <>
>
> Perhaps I missed it, but nowhere did I see mentioned explicitly what is
actually quite obvious from the facts as stated -- that is, that the
"coloration" is primarily in the off-axis sounds which are basically the
background noise of the environment. Add to this the low frequency
cutoff of the reflector system, and you have the classic "parabola sound."
>
> The subjective effect of faithfully capturing all the high frequencies
of the on-axis signal while stripping away the highs from off-axis
directions is to make the signal seem crisp yet mellow. The crispness
owes to the fact that the highs of the (on-axis) signal are no longer so
masked by highs from the (off-axis) background. The mellowness owes to
the fact that we have stripped the harsh highs out of the background.
I'm not so sure about stripping out harsh highs. True the mic has that
off axis characteristic, but it's being used normally at a distance.
Where the environment has done a lot of that removal of highs.
Unless the mic has some form of baffle it's still directly picking up
the local ambiance including it's highs, of course. That part of the
signal has nothing to do with the reflector.
Walt
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