David,
My recent recording with Faulkner array two mkh 30/30
I am experimenting and this one is in a Camping site near my hometown. The =
Faulkner array was sit over my car pointing the trees.
https://soundcloud.com/freitojos/130309t-1900z-down-corus
Regards,
Jos=E9
--- In "Avocet" <> wrote:
>
> > Is this due to a the rear element being a figure 8?
>
> > I must admit the shotgun mic is the only one Ive never taken apart &
> > I own the NTG3.
>
> Mike,
>
> A gunmic has a single hypercardioid capsule near the rear of the
> slots/holes, but the rear lobe is small and the rear rejection is
> around 12dB or greater for most frequencies. The total pickup from the
> rear hemisphere solid angle is usefully low.
>
> The enhanced forward directional sensitivity is produced by the
> director tube, also called an interference tube, which acts like a UHF
> television antenna with multiple elements (Yagi array). Sounds coming
> from am angle take a double path, direct to the capsule and indirectly
> with a delay through the director tube. With careful design these two
> signals cancel out for side sounds and enhance for on-axis sounds.
> Baffles inside the director tube shorten its effective length for
> higher frequencies.
>
> A longer director tube gives a narrower forward cone and more
> directivity for lower frequencies. In practice, a long gunmic (aka
> rifle mic) is too directional for off-axis use as in a stereo pair,
> but I am experimenting with two MKH-816's and may try three of these
> for a more consistent stereo image with a high "fetch".
>
> > My faulker rig (2xfig8's) has such a good off axis rejection I can
> > simply tilt it down to the floor to make the motor way din vanish. -
> > Great for sfx capture.
>
> Fig-8 mics are the only ones with a controlled directional response
> for all frequencies and they produce good stereo. Their problem is
> that the response of a rig is front/rear symmetrical. As you say, you
> can aim off this rear response, but you can also use a baffle like
> your own body, a car, a building or whatever is handy.
>
> David
>
> David Brinicombe
> North Devon, UK
> Cogito cogito ergo cogito sum - Ambrose Bierce
>
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