On 10/02/2018 07:03 PM, Len Moskowitz wrote:
Jonathan Kawchuk wrote:
Has anyone checked out the Nevaton VR microphone
? Incredibly low self-noise if
you are looking to do nature recording. Curious what the spatial
resolution will be like and what calibration looks like.
We heard on the Facebook groups from Nevaton's customers that Nevaton
doesn't plan to provide any software, nor to provide any calibration
information for this microphone.
That's incredible if it's true.
Yes, very weird indeed. Do you have a URL for those comments?
Maybe they are just seeing what kind of response they get from the
announcement before investing more in the product? Or assume that anyone
really interested would be able to measure and calibrate it? Or maybe it
includes matrixing and filters and outputs B format directly? (unlikely...)
Speculation only. We have to wait to hear from them...
Spatial resolution, at best, will be first-order. And that's only if
they got the electro-mechanical design and the calibration right.
From the pictures it looks like a basic tetrahedral design. If the
capsules are cardioid (I imagine they would not get that wrong, I can
see the vents in the back of the capsules in one of the pictures) then
the microphone should get first order patterns at low and mid
frequencies even with just a static A to B matrix (the theoretical one).
It might even be great if they really really match the capsules.
Otherwise they will need to compensate for uneven gains in the A to B
matrix. Not too hard.
Above the transition frequency (depends on the radius of the array) they
will need correction filters and proper measurements to calculate them
to have a reasonable flat frequency response.
-- Fernando
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