Well, mmmm, ahhhhh, this (and their website) all smacks a bit of Snake Oil
to me, though I could be completely wrong. As far as I can find, there are
no technical specifications anywhere (did I miss something?) which is
always a bit suspect when big claims are made. For all their eulogising
about Gerzon, did they actually read his paper on the soundfield mic from
the 1975 AES conference in London? The problems of large capsules/wide
spacings are clearly spelt out. There is no way such a large array can NOT
suffer from horrendous spatial aliasing down to quite low frequencies. Now,
for on-axis sounds there is no reason such microphones shouldn't be good,
even excellent, as was pointed out by Peter Baxandall in 1980 (Loudspeakers
as High-Quality Microphones) <http://www.aes.org/e-lib/browse.cfm?elib=3776>
at the London AES convention. Off axis, on the other hand, the response
can't be anything but awful with, for a 100mm capsule, nulls starting at
mid frequencies.
Tell you what, though, would make some wonderfully freaky images for
electro-acoustic pieces ;-)
Dave
<http://www.aes.org/e-lib/browse.cfm?elib=3776>
On 9 September 2015 at 19:40, Joseph Anderson <
j.ander...@ambisonictoolkit.net> wrote:
> Hello All,
>
> Of interest to this thread, a video posted by Water Lily Acoustics:
> https://www.facebook.com/WaterLilyAcoustics/videos/869044249844736/
>
> From the page:
>
> In this video one sees an Ambisonic (B format) array of four transducers:
> > an omni directional microphone, in conjunction with three, push/pull,
> > figure-of-eight, planar magnetic microphones, arranged in a coincidental
> > manner.
> > The figure-of-eight, true push-pull, planar magnetic microphones -
> > employing 3 micron thick film (including the vacuum deposited audio
> traces)
> > and Neodymium magnets - are prototypes. Designed by Dragoslav Colich, the
> > chief designer at Audeze and the man behind their extraordinary
> headphones!
> > A master of planar and electrostatic transducer technology, Mr. Colich
> has
> > been busy at work and here you see the fruits of his labor Tests made
> with
> > the array shown in the video below, has lead to the creation of a
> > "soundfield" type microphone, with four sub-cardioid, planar magnetic
> > drivers in a tetrahedral arrangement. All these outstanding microphones,
> > mono (including first planar cardioid!), stereo and Tetrahedral, shall be
> > soon seeing the light of day!
>
>
> My best,
>
>
> *Joseph Anderson*
>
>
>
> *http://www.ambisonictoolkit.net/ <http://www.ambisonictoolkit.net/>*
>
>
> On Wed, Sep 9, 2015 at 10:04 AM, len moskowitz <lenmoskow...@optonline.net
> >
> wrote:
>
> > Ronald C.F. Antony wrote:
> >
> >
> > Looks great, although, the capsules look rather large on these images?
> >>
> >
> >
> > 100mm diameter (per their web page copy)
> >
> > ?so I wonder how that?s going to influence the sound or what sort of
> >> calibration they offer. Anyone got any experience with one of these?
> >>
> >
> >
> > IMO, they have some very serious technical challenges to surmount.
> >
> >
> >
> >
> > Len Moskowitz (mosko...@core-sound.com)
> > Core Sound LLC
> > www.core-sound.com
> > Home of TetraMic
> >
> >
> >
> >
> > _______________________________________________
> > Sursound mailing list
> > Sursound@music.vt.edu
> > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
> > edit account or options, view archives and so on.
> >
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--
As of 1st October 2012, I have retired from the University.
These are my own views and may or may not be shared by the University
Dave Malham
Honorary Fellow, Department of Music
The University of York
York YO10 5DD
UK
'Ambisonics - Component Imaging for Audio'
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