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Re: Humpback talk (was: Hydrophone Recording)

Subject: Re: Humpback talk (was: Hydrophone Recording)
From: "Kawika" dkuhn012001
Date: Thu Mar 11, 2010 6:18 pm ((PST))
Thanks John, you should hear the entire conversation, this is a few mere 
snippets. They went on 45 min with incremental changes in their query/response 
voc's, but covering a wide range of sounds.

Aloha,
David


--- In  "hartogj" <> wrote:
>
> 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" <dkuhn012001@> 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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