Hi David,
By far the most enlightening conversation I have heard all day.
Sounds like you are happy with the Aquarian H2a.
Thanks for sharing.
John
--- In "Kawika" <> wrote:
>
> Aloha Nature recordists, I pick up this thread from a few weeks ago, having
> finally gotten out in a two-man sea kayak as I had planned. We headed out
> South from Kaua'i and I dropped the 'phones in about 300 feet of water about
> 2 miles out. Here is a condensed and stitched together sample of my result--
>
> http://soundshawaiian.com/mp3/Hump%20more%20condensed%20Mixdown.mp3
> or http://tinyurl.com/ykrqr9l
>
> A very exciting time it was. I got about 45 min of this conversation, not
> sure how far away the animals were, though we saw adults within 200 meters.
>
> You can hear other whales more distant.
>
> Gear: Sony D50, ART Phantom II power supply, Aquarian H2a XLR Hydrophones
> with 10 m cables from Rob Nichols. I didn't dare take my SD 702 for fear of
> water damage.
> Precautions: I kept the gear enclosed in a zip-loc inside a waterproof
> dry-bag until conditions felt right. Then worked the controls inside the dry
> bag. All worked well until the wind picked up and I had to close up again,
> especially working back upwind as the wind turned off-shore. I'm going out
> again, this time to drift down-wind a few miles.
> Post editing included 20db lowcut (recording was done without low cut), 10 db
> cut above 2500hz, and several passes to reduce hiss.
>
> I like these new XLR hydrophones very much. I may need longer cables to get
> deeper, as I think a lot of the hiss is from surface noise, and maybe some
> distant snapping shrimp. The mics are quieter in self-noise than this
> recording indicates.
> Next time I'll also spread the phones more by suspending from bow and stern,
> about 16 feet, whereas this time the spread was only 6 feet.
>
> I see a lot of hydrophone recording in my future, adding another dimension to
> my Hawai`i soundscape collecting. Really fun!
>
> Aloha,
> David
>
>
> --- In "Kawika" <dkuhn012001@> wrote:
> >
> >
> > Yes Grant, you have discovered the Snapping Shrimp, bane of shallow water
> > marine recordists. Same in Hawaii, maybe the whole planet. It's fairly
> > broad-band , can't get it out, or at least I haven't found a way. It is
> > said that you need deeper water, say over 30 meters. I'll soon find out, as
> > I'm going out in a kayak to test it out, while the Humpbacks are here in
> > great numbers.
> > Aloha,
> > David
> > --- In "jasonpudd" <jasonpudd@> wrote:
> > >
> > > Grant,
> > >
> > > Done in salt water? The clicking sounds are a species of shrimp.
> > >
> > > Jason
> > >
> > > --- In "Grant Finlay" <grantfinlay@>
> > > wrote:
> > > >
> > > > Managed to fix the issues I mentioned, here's a recording from
> > > > under Kerikeri River this morning. If anyone can tell me what we are
> > > > hearing I'd be very grateful...
> > > >
> > > > http://tinyurl.com/hydrophone001
> > > >
> > > > Regards,
> > > > Grant.
> > > >
> > >
> >
>
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