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Fwd: [Nature Recordists] Re: parabolic mics

Subject: Fwd: [Nature Recordists] Re: parabolic mics
From: "Raimund" animalsounds
Date: Tue Jun 14, 2011 7:41 am ((PDT))
> Question 3:
> Aware of how a smaller mic will be attached to a parabola in much an
easier way than a shotgun mic...
> Is it possible to use the parabola approach with shotgun mics like mine
(sennh mkh 416) pointing towards the center of dish?

Hi Dani, I tried that a few years ago and it worked as expected.
See http://www.avisoft.com/sounds/ME66Telinga.jpg

and listen to a recording of a Goshawk recorded that way:
http://www.avisoft.com/sounds/hab.wav

Note that such a setup will virtually inhibit the interference tube of the =
shotgun (to make it work, the microphone capsule of the shotgun must be pla=
ced exactly at the focal point of the dish). So, I guess that the results w=
ould be very similar to a parabolic setup with a normal cardioid microphone=
.

Theoretically, a directional microphone (having a cardioid pattern) pointin=
g into the dish would be better than an omni-directional mic. The omni woul=
d pick up both the direct and the reflected sound, which can lead to notche=
s in the overall frequency response. Unfortunately, a common (stick-shaped)=
 cardioid mic pointing into the dish would be more bulky than a setup with =
an omni pointing outwards.

Regards,
Raimund







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