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Re: mic spacing vs spatial veracity

Subject: Re: mic spacing vs spatial veracity
From: "Gianni Pavan" gpavan1960
Date: Mon Aug 5, 2013 12:33 am ((PDT))
nice recording
I see you're using the Korg MR2. How you judge it ? in particular for the
self noise on internal mics and on external inputs ?

Gianni


2013/8/4 Mike Rooke <>

> **
>
>
> Russell,
>
> Heres a system Ive coined the Hyper Co-Incident mic:
> https://soundcloud.com/urlme/pmhc1-water-rain-pebbles
>
> This version is mounted inside and old AKG P3 dynamic mic body. (dynamic
> element removed). In the recording a thin foam cover and rode dead kitten
> are used as a windscreen.
>
> The recording theme as its name suggests is water and thunder although it=
s
> more of a quick demo for the stereo image / low frequency response all th=
e
> way to 16 Khz.
>
> BR
> Mike.
>
>
> --- In  "rock_scallop" <>
> wrote:
> >
> > Hi Russell,
> > I think we have heard plenty of examples shared here on this group of
> non-coincident arrays producing good stereo localization without any
> aberrations being noticeable or problematic. I also think coincident arra=
ys
> like XY, Blumlein, and MS will also produce localization aberrations, lik=
e
> on-axis lobes, depending on the polar frequency response of the particula=
r
> microphones used. Ocean and stream sounds can be especially challenging
> with any array, and I would agree, at least in specific instances, a
> coincident array may help simplify things.
> >
> > John Hartog
> > rockscallop.org
> >
> >
> >
> > --- In  Russell Dawkins <rdawkins@>
> wrote:
> > >
> > > Any stereo array can easily be tested for efficacy by the simple
> expedient of (while recording) walking across the soundfield in an arc
> equidistant from the mic array. If the spatial representation is accurate
> as captured, when the recording is played back over properly positioned
> loudspeakers (=B130=BA for conventional stereo; =B145=BA for X-Y Blumlein=
 crossed
> figure-of-eight) the footsteps should progress evenly from one side to th=
e
> other. You could be forgiven for thinking this would be the result in mos=
t
> cases, but in fact it seems to work only with crossed figure of eights an=
d
> M-S arrays, both coincident. All spaced arrays produce extremely aberrant
> results with this experiment.
> > > For most nature sound recordings I don't think it matters much -
> especially of animal sounds - but to me it does matter when I am trying t=
o
> capture what might be called an acoustic, such as a stream or a beachfron=
t
> with waves (to realistically capture the movement of the breaking part of
> the wave).
> > >
> >
>
>
>



--
Centro Interdisciplinare di Bioacustica e Ricerche Ambientali
Universit=E0 degli Studi di Pavia
Via Taramelli 24, 27100 Pavia
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http://mammiferimarini.unipv.it












"While a picture is worth a thousand words, a
sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause.



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