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Re: EQ recordings with parabola

Subject: Re: EQ recordings with parabola
From: "Klas Strandberg" klasstrandberg
Date: Mon Jun 4, 2007 12:03 pm ((PDT))
Hi!

I understand! And I understand the "fatigue" of "parabol sound" after
such a trip.

I would never say that the Stereo DATmic has the same "clarity" as
the MKH. It has though, the best "clarity" at 90 degrees out from
each mic, depending on the PZM effect. That is, 90 degrees towards
the plate. As a matter of facts, one could even claim a "sharpness"
of tone from the sides. You can hear it when saying a sharp "ssssss"
straight into the plate, about a foot from it.
Using the Stereo DATmic to get stereo recordings of birds in front of
it is the "worst case" scenario. The PZM effect is low + that the
highest frequencies get out of phase with one-another, hitting the
membranes from the side.
Right now I don't have a sound card. As soon as I get one, I will
comment on your recordings.

Best wishes,

Klas.



At 19:38 2007-06-04, you wrote:
> > Hi! Can you put that in other words? I don't understand.
>
>Hi Klas,
>
>In that trip things were generally a bit closer than is usually
>possible in England. The Telinga/DATmic has a tendency to tonal
>brightness and on this trip I could have wished for a bit less of that
>there. It was a recording trip - the up at 3:30 and on site at 4:00
>sort of routine for about 10 days so things tended to sound harsh from
>being tired too ;) Great fun though - I'd do it again anytime and got
>quite a lot of stuff that I'm still working through.
>
>I've put up a comparison on
>
>http://www.suffolkbirds.co.uk/article/75/eq-ing-a-parabolic-dish-v-
>regular-mics
>
>where I've tried to use the frequency response you shared with us to
>take this out. Though it does address the tonal brightness, and indeed
>the measurement shows a frequency response close to the MKH30/40 that I
>recorded the same subject from at the same location a few minutes later
>I would not judge the result a success as it seems now to lack clarity.
>
>That is of course, not the primary way the Telinga is designed to be
>used so it shouldn't be seen as a criticism of the device. I love the
>lightness and the transportability, and it gets you things you can't
>get any other way, like the scops owl listed on that page which was
>from about half a mile, picked out from a bunch of nearby crickets.
>Indeed on the trip the dish showed its portability - I was able to get
>all my gear into one rollable sports bag to check in and a rucksack for
>the mics and recorders and it is light. However, I do wonder as to the
>neutrality of the DATmic - on one part of that trip I didn't get a
>clear idea of the situation and was recording a bunch of red-footed
>falcons wheeling about their nest sites in some poplars. There I took
>the DATmic out of the dish, inverted the dish and stuck it backwards
>pointing up, using it as a open mic and the dish as a stand. I had
>thought this was a focus on the nest from 100yards sort of thing, not
>what turned out to be a soundscape. I did miss my MKH30/40 there, as
>the DATmic seemed to lack clarity, which set me thinking that since I
>have these I might as well try them in the Telinga dish if I can see a
>way to mount them.
>
>
>
>"While a picture is worth a thousand words, a
>sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause
>
>Yahoo! Groups Links
>
>
>

Telinga Microphones, Botarbo,
S-748 96 Tobo, Sweden.
Phone & fax int + 295 310 01
email: 
website: www.telinga.com







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