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Re: Koke'e, Kaua'i, Dec 30 2008 (thunder)

Subject: Re: Koke'e, Kaua'i, Dec 30 2008 (thunder)
From: "David Kuhn" dkuhn012001
Date: Thu Jan 29, 2009 2:35 pm ((PST))
Thank you Brendan, Oryoki, Scott, Lou, Anton, Rob, Russell, Corthner (?), f=
or taking the time to respond. Please excuse my late return. I'll compress =
responses into this email.

Rob wrote:
"Hi David--
The vertical axis imaging in my headphones is especially stunning.
The flutter in the reverb at the very first of the thunder seems to
be coming from above as well. As flutter usually occurs between two
(or more) roughly parallel reflecting surfaces, this has me curious.
Perhaps there are two parallel cloud shapes overhead or maybe the
flutter is happening between the land and the clouds if the clouds
are very low.

Can you describe the lie of the land with a little more detail? Are
you on a plateau above the canyon or within the canyon? It could be
that the gain is so low that the most distant reflections are buried
by contrast. Based on the spatial cues I can detect, they suggest to
my ears that the mics are not within a canyon unless its a narrow one
(well less than 200 meters). I think I might detect a ground-level
vertical surface towards left center about 150 feet away and an
"opening" that extends away in the rear, moving a little to the
right. If so, that surface on the left and the ground might be
involved with the flutter. Thanks for sharing! Rob D."

--------------I think you may be right Rob, that the flutter is the bounce =
between ground and clouds, and not reverb off the canyon walls as=A0I thoug=
ht. Here is a=A0photo of Waimea Canyon, the edge of which is 2-300 meters f=
rom my place. The canyon is 2-3 miles across and 10 miles long, likely too =
far away for that kind of close-spaced reverb.
http://en.wikipedia.org/wiki/File:Waimea_Canyon2.jpg

&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
=A0
Scott Fraser wrote--
"Sounds great even on laptop speakers. How did you shield the mics from
the rain? I'm not hearing any drops impact the rig."
=A0
Scott, see image on my website
=A0
http://soundshawaiian.com/listeninggear.html
=A0
"Here is the modSASS with long-fur wind screen, set up for rain--not pretty=
 but it works--an ordinary umbrella covered with two layers of garden shade=
 cloth (changes rain-drop sound from "pop" to "fft"); umbrella struts are r=
e-inforced with strips of split pvc pipe. This is what heavy rain sounds li=
ke: http://soundshawaiian.com/mp3/Thun%201-13-08best%20(2).mp3 "

=A0
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
=A0
Russell Dawkins wrote--
"Even though the gain is set low, there is still digital clipping
audible at 5 seconds after the start of the thunder - sounds like a
tick, so I guess it is a digital over, not pre or head amp clipping."
=A0
Yes Russell, a little of bit of clipping--I could have set the gain even lo=
wer and still ended up with plenty headroom and not missed the quieter part=
s like the continuing rain. I'm still learning to record thunder.
=A0
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
=A0
Lou Judson wrote--
Possible to purchase an hour or so on WAV files? I love it!
=A0
Yes it is Lou, please contact me offlist
=A0
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&

=A0
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
David Kuhn
www.soundshawaiian.com


808 335 0398
Cell 808 651 8247
Mail to: PO Box 1018
Waimea, Kaua'i HI 96796
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