Posted by Richard Crowley on 03/25/06 14:12

"Zak" wrote ...
> I suppose the idea is not resonance in the tube, but varying delays.
> The delays only come out equally if the shotgun is pointed the right
> way.
>
> In that way it would be equivalent to a tube with holes over the
> length.
>
> As for multiple microphones for each delay: I'd guess it would be
> worse. Each mic adds its own noise. It doesn't add linearly while the
> sound will (modulo differences in the mics), but it is still more than
> the noise of a single mic.
>
> Hmm... not such a bad idea to experiment. Piece of PVC tube, mic in
> the end, holes all over the length and see what it does.

Which is how "real" commercial "shotgun" (line-gradient)
microphones work. OTOH, if it were as simple as taking a
tube and putting holes along the length, they couldn't get
$1500 for a good shotgun microphone.

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