if you feed the figure of eights to a mixer you can actually generate a better
Omni. Or, if the circuit is made of four cardioids each to one pin, the circuit
is still a pair of figure of eights, but all four pins summed is a good Omni. I
built my Velan, a six cardioid native B format mic, where all six capsules
contribute to the Omni.
umashankar
> Date: Thu, 14 Nov 2013 16:28:12 +0100
> From: netti...@stackingdwarves.net
> To: sursound@music.vt.edu
> Subject: Re: [Sursound] New native B-Format microphone!
>
> On 11/14/2013 04:08 PM, umashankar manthravadi wrote:
> > one ground pin, two figure of eights with one or both receiving phantom
> > voltage, and two pins, one from each figure of eight, out of phase for the
> > Omni.
>
> you mean the omni will be a phantom circuit? oh my god, i only hope he
> can tame the demons he has summoned.
>
> after reading a few of jörg wuttke's papers on what can go wrong in even
> a simple phantom _power_ circuit, this remark makes me very, very afraid :)
>
> unless i'm very much mistaken, the achievable common-mode rejection now
> also depends on the relative twist between two pairs, and the problems
> with impedance matching between hot and cold have increased by a factor
> of two.
> where i live (in evil places with thyristor dimmers and long analog
> multicores), that's scary.
>
>
> --
> Jörn Nettingsmeier
> Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487
>
> Meister für Veranstaltungstechnik (Bühne/Studio)
> Tonmeister VDT
>
> http://stackingdwarves.net
>
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