naturerecordists
[Top] [All Lists]

Re: Dawn Chorus - International Dawn Chorus Day

Subject: Re: Dawn Chorus - International Dawn Chorus Day
From: "Michael Oates" msohooates
Date: Wed May 7, 2008 3:25 pm ((PDT))
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
>>
>




<Prev in Thread] Current Thread [Next in Thread>
Admin

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the naturerecordists mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU