Hi Bernie,
I don't doubt the value of your collection as or to baseline data. Though i=
t seems to me that collecting baseline data and working from baseline data =
are two different things. How do you "work from" baseline data if it is you=
r first visit to a location? What baseline data that others have collected =
do you consider important to research for a site while in the planning stag=
es for a recording trip to a new location?
I am surely less meticulous than you when deciding on recording locations. =
My approach usually has more to do with where the wind is not blowing, than=
what habitat work is being done there or what data surveys were conducted =
there before me. Careful documentation of recording sessions make them mor=
e repeatable, and potentially more valuable as, or supportive to, baseline =
data.
John Hartog
--- In Bernie Krause <> wrote:
>
> I only work from base-line data, John. And since I am concentrating
> mostly on entire soundscapes, no collective iteration is absolutely
> repeatable. Nor is it expected to be so. However, factoring in
> weather, climactic conditions, changes in vegetation, geology, etc.,
> etc., etc., models of biophony will tend to fall within a range of
> what Stuart Gage (Michigan State University's Environsonics Lab)
> refers to as a state of dynamic equilibrium.
>
> Bernie
>
> On Jun 21, 2009, at 12:37 AM, John Hartog wrote:
>
> >
> >
> > Hi Bernie,
> > The difference in density between freshwater and saltwater might
> > affect timbre slightly, though I have not tried to discern.
> > Besides density, most of the "permutations" you mention are
> > dependent on climatic variables that will affect sound signatures in =
> > complex and temporal ways, making some locations highly audibly
> > distinctive through time while washing out the distinctiveness of
> > other locations. Even beach rake (profile) can be a highly temporal =
> > variable, changing season to season or over multi-year cycles.
> >
> > Bernie, how do you determine what references are known and
> > repeatable, especially if you are recording a location for the very =
> > first time?
> >
> > John Hartog
> >
> > --- In Bernie Krause <chirp@>
> > wrote:
> > >
> > > Wave intensity and periodicity also timbre, John. All different at
> > > each site. Since 1979, all my recordings are calibrated to known and
> > > repeatable references so I've got a base-line reference and
> > something
> > > to compare to. I haven't "studied" this phenomenon. And there are so
> > > many permutations (air temperature, wind, swells, wave height,
> > > current, beach rake, salinity, and so many other factors) that it
> > > would be great fun to get a better handle on what may well be
> > > something else to note in our lovely sonosphere. My guess is that
> > > Coney Island is as distinctive as the beach at Big Sur.
> > >
> > > Bernie
> > >
> > >
> > > On Jun 20, 2009, at 7:35 PM, John Hartog wrote:
> > >
> > > >
> > > >
> > > > Hi Bernie,
> > > >
> > > > First you compare different aspects of each location -
> > (geophysical)
> > > > freshwater waves to (ecological) saltwater coastal habitat,
> > which is
> > > > a little confusing. But it seems you are suggesting the physical
> > > > differences between fresh and salt water also result in unique
> > sound
> > > > signatures. Biological aside, given two beaches of similar
> > > > composition and profile, one saltwater and the other freshwater,
> > > > what specific differences might one expect to hear?
> > > >
> > > > John Hartog
> > > >
> > > > --- In Bernie Krause <chirp@>
> > > > wrote:
> > > > >
> > > > > Lovely shots and clips, Curt. What is especially remarkable is =
> > the
> > > > > distinctive ambience of fresh water waves as compared to those =
> > of
> > > > salt
> > > > > water coastal habitats. The periodicity of the waves (fresh
> > water or
> > > > > salt - storm or calm) is always unique, as are the pitch and
> > timbre.
> > > > > When comparing sites, it is even possible to anticipate the
> > > > soundscape
> > > > > from the rake of beaches. The signatures from each site are
> > clearly
> > > > > incomparable.
> > > > >
> > > > > I can't help with the bird ID, though.
> > > > >
> > > > > Bernie
> > > > >
> > > > >
> > > > > On Jun 20, 2009, at 12:34 PM, Curt Olson wrote:
> > > > >
> > > > > >
> > > > > >
> > > > > > Folks,
> > > > > >
> > > > > > About a month ago, I was making a shoreline recording at a
> > > > sheltered
> > > > > > bay on the North Shore of Lake Superior. The place is called
> > > > Pebble
> > > > > > Beach, the location for most of the classic photos of Split =
> > Rock
> > > > > > Lighthouse, an historic Minnesota icon.
> > > > > >
> > > > > > Here's my own version of the classic/cliche photo, taken last
> > > > summer:
> > > > > >
> > > > > > http://www.trackseventeen.com/images/DSCF3552_2.jpg
> > > > > >
> > > > > > Here's another view of the bay, taken the day of my
> > recording last
> > > > > > month, from shore off the left side of the photo above:
> > > > > >
> > > > > > http://www.trackseventeen.com/images/DSCF4695_2.jpg
> > > > > >
> > > > > > While I was recording, a smallish bird of prey swooped into =
> > view
> > > > and
> > > > > > landed in a tree branch about 20 feet above my mic rig. It
> > perched
> > > > > > there for a minute or so, then flew down and landed on the
> > pebbles
> > > > > > about 20 feet in front of my mics. I didn't have binoculars =
> > with
> > > > me,
> > > > > > so I don't have much detail to work with. This bird was
> > slightly
> > > > > > smaller than a crow. It did not seem to perch straight up
> > and down
> > > > > > like a buteo, but rather slightly forward. After checking my =
> > bird
> > > > > > books, my best guess is that it might have been a Merlin.
> > Here's a
> > > > > > 3:05 segment of the recording. Does it's call give any clues?
> > > > > >
> > > > > > http://www.trackseventeen.com/soundblog/x090507c-pebble_beach.m=
p3
> > > > > >
> > > > > > Some of the background sounds in this clip include a 2-3' surf
> > > > hitting
> > > > > > rocks a couple hundred yards away, toward the right, and some
> > > > gusty
> > > > > > winds in the surrounding cedar and pine trees. (Unfortunately,
> > > > you can
> > > > > > also hear some wind disturbance in my mics.) And there might =
> > be
> > > > some
> > > > > > rumble from a heavily used state highway about 1/4 mile back
> > > > from the
> > > > > > lake.
> > > > > >
> > > > > > Thank you in advance for any input on this!
> > > > > >
> > > > > > Curt Olson
> > > > > >
> > > > > >
> > > > >
> > > > > Wild Sanctuary
> > > > > POB 536
> > > > > Glen Ellen, CA 95442
> > > > > 707-996-6677
> > > > > http://www.wildsanctuary.com
> > > > > chirp@
> > > > > Google Earth zooms: http://earth.wildsanctuary.com
> > > > > SKYPE: biophony
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > >
> > > >
> > > >
> > >
> > > Wild Sanctuary
> > > POB 536
> > > Glen Ellen, CA 95442
> > > 707-996-6677
> > > http://www.wildsanctuary.com
> > > chirp@
> > > Google Earth zooms: http://earth.wildsanctuary.com
> > > SKYPE: biophony
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
> >
>
> Wild Sanctuary
> POB 536
> Glen Ellen, CA 95442
> 707-996-6677
> http://www.wildsanctuary.com
>
> Google Earth zooms: http://earth.wildsanctuary.com
> SKYPE: biophony
>
>
>
>
>
>
>
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