John,
Thanks :)
I really should have taken some photos as I was constructing it, but here i=
s one showing
it finished.
http://www.mikeoates.org/arl/wildlife/jecklin_array1.jpg
Inside is a pair of Sennheiser MKH20 mics separated at 170mm and are basica=
lly mounted on
a stereo bar using the standard mic holders for these mics. In between thes=
e is a barrier
made from 9mm MDF covered with 10mm each side of acoustic foam. The barrier=
instead of
being circular of about 330mm I used an oval shape about 160mm high and 220=
mm deep. The
whole array has an aluminium frame going around it to support the coverings=
, of which
there are up to four. The reduced size of barrier was to make it more porta=
ble.
The closest one to the mics at about 75mm distant to give plenty of air spa=
ce around the
mics is a dual layer of Tulle Long Net with wadding sandwiched between. Nex=
t is a layer of
fleece, over that is faux fur and finally just to make it less obvious to w=
ildlife some
Insect Net from http://www.wildlifewatchingsupplies.co.uk Obviously not al=
l layers may be
needed, that will depend on the weather. I am aware that some audio losses =
will occur, but
for this recording I used the lot, so it can't have that much of an effect.
I will try and take some detail shots and post here, but it will not be for=
a few days as
I will be away.
Mike
>Nice stuff Mike! An auspicious sign it seems - losing one's boot to
>the muck. Can you describe your modified Jecklin Disk array?
>
>John Hartog
>www.rockscallop.org
>
>
>--- In Michael Oates <> wrote:
>>
>> Dawn Chorus 4 May 2008 Compilation
>>
>> I thought I would share my very first recording of a dawn chorus, it
>just happened that I
>> planned to do this on the very same day as International Dawn Chorus
>Day, yes it really
>> was a coincidence. I was using it as a practice run for next weekend
>when I am going on a
>> trip to the Northumberland National Park for wildlife recording.
>>
>> This is recorded just outside of a village called Walshaw in
>Lancashire UK. The file below
>> is a compilation of approx 5 x 2 min clips from a single 44 min
>recording started at
>> 4:54am I was planning an earlier start, but when I got to the
>location I was going to
>> record from, I got stuck, literally. Note to self: "do not walk
>through fields that you
>> have not walked through in daylight first" I ended up almost knee
>deep in a bog, took all
>> my effort to keep the gear out of the mud, sacrificing my foot to
>the wet mud when my
>> Wellington boot came off !.
>>
>> Once I got out I was all set to go home wet and frustrated, but I
>found another spot on a
>> public footpath not too far away and decided to stay and record. I
>am glad I did, as these
>> are the best bird recordings I have done yet. Some of the time there
>was some light rain
>> but it was light enough not to record, later on it got quite heavy
>as you will be able to
>> hear.
>>
>> I won't try and say which birds are on the recording, because I am
>very new to this and I
>> am learning to identify them, for me it's a long slow process.
>>
>> Recorded using a modified Jecklin Disk array with two Sennheiser
>MKH20 mics to a Fostex
>> FR-2LE via a Sound Devices 302 mixer. The whole array was protected
>from the wind rain
>> with faux fur over a frame. I had the 160Hz high pass filter on the
>302 and used a very
>> gentle base EQ cut in Audition to remove some distant traffic rumble.
>>
>> The file is 10m54s long and is a 14.9MB mp3 encoded at 192kbps
>>
>>
>http://www.mikeoates.org/arl/wildlife/dawn_chorus_compilation_20080504.mp3
>>
>> Mike
>>
>
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