Re: [Sursound] New FOA recorder

[Michael Chapman]

> Looks like the same guts as the Tascam DR-701D? 4 plus 2, but more
> cleverly
> implemented, what op amps does it use?
>
> Bit gutted, bought the Tascam recently looking for a budget ambisonic
> recording solution that wasn't a Zoom H6, this F4 looks so much better in
> terms of design.
>

Neat it only weighs in at about 1 Kg (without batteries ...).

It has four XLR (3-pin) in's.
Now what can I plug into an XLR socket   . . . ah, yes, four one metre XLR
leads weigh in at one pound (444g).
Mmm.
Might have been more sensible to have an (XLR housed) CAT-5 input (orany
other multi.channel input) but can't see that appealing to the 'truckers'
with their enormous windshields, recording in (?)mono 

Mmm.

Michael

(Wonder what the price will be?
?>50% of the f8
or does monochrome LCD help?)





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Re: [Sursound] New FOA recorder

[Fons Adriaensen]

On Tue, Sep 06, 2016 at 05:18:17PM +0100, Stefan Schreiber wrote:

> >My eight channel microphone is meant to be  2nd order with height.
> >I know that needs nine  channels but angelo farina has told me it
> >will be possible to create a filter matrix so the 8channels of A
> >format can be processed into 9 channels of B format.

Be careful with such assertions. Provided your mic captures the
*full* 2nd order information of some subset of all directions
(at the expense of other directions) then you can encode this
into correct 2nd order signals.

For example if you have correct 2nd order horizontal signals
you can compute the missing ones *assuming all sources are
in the horizontal plane*.

But if you use some capsule layout that has no preferred
directions (in other words if you try to be full-sphere 2nd
order, e.g. a cube or something similar) the result with 8
capsules will be that you don't have full 2nd order info in
*any* direction, and any attempt to obtain correct 2nd order
signals (by linear processing) will fail.

Ciao,

-- 
FA

A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorov)
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