Maybe you were near a sewer outlet pipe. Could be sounds from a pump.
John Hartog
--- In Marinos Koutsomichalis <=
.> wrote:
>
> well,
>
> whatever it is, I like it - and that' s what matters probably..
>
> but I still, I tend to believe that it has to be sth buried in the sand,=
>
> This beach is pretty isolated - there' s not much going on there - Just a=
couple of houses and a tavern, or sth like that. No radio stations, cables=
or people using mobile phones.. Well, in our century electromagnetic radia=
tion could be everywhere, of course.. There is a military airport somewhere=
in the greater area, indeed, but we are talking about a distance of more t=
han 10 kms. It' s highly unlikely that their radar would cause such a sound=
underwater..
>
> The most logical thing to me is that some kind of crustacean or sea-worm =
lived there or sth else. (it' s not flattering to record radar sounds in a =
beach anyway..)
>
> just for the record - The hydros were a set of dolphinEar Pros, I bought =
them second hand from a guy that bought them together for a never-to-be-rea=
lised-project - so probably they are of the same set - plugged into a maran=
tz PMD661 recorder.
>
>
> On 31 =C3=8E=C2=99=C3=8E=C2=BF=C3=8F=C2=85=C3=8E=C2=BB 2010, at 5:59 =C3=
=8E=C2=BC.=C3=8E=C2=BC., James Shatto wrote:
>
> > > --- On Sat, 7/31/10, Marinos Koutsomichalis <>
> > > wrote:
> > >
> > > From: Marinos Koutsomichalis <>
> > > Subject: Re: [Nature Recordists] what is this creature/sound ?
> > > To:
> > > Date: Saturday, July 31, 2010, 12:33 AM
> > >
> > >
> > > There are some military radars within the greater area,
> > > but in a distance of several km, if that was the case,
> > > the other mic should pick that kinds of sounds I think.
> > >
> >
> > Not necessarily. If you didn't buy them as a matched pair. Manufactured=
as part of the same lot with the same materials. Like if you bought them u=
sed from two different sources at different times. The mics could be differ=
ent enough to respond differently. It could be things other than the mics a=
s well. Are you using the same brand of cable with the same connectors, of =
about the same age? And various other possibilities with the field recorder=
and stuff.
> >
> > I've thought about building a faraday type cage for my field recorder a=
nd preamps. Which would double as a rain shelter. While I'm mostly immune t=
o most cell phone handshakes and stuff like that, I have picked up a radio =
station at least once. There was visual contact with the transmission tower=
, just a couple of blocks away. Lowering the elevation of the mics helped. =
Tucking the field recorder under the aluminum bleachers I was sitting on he=
lped. Even making sure that the 1/4" adapter on the 1/8" tip of my headphon=
es was secure helped. While it didn't remove the sound from the recordings =
in it's entirety, it did achieve a balance where the radio station station =
can only be heard when using studio monitors and at a volume that wasn't pl=
easant to listen at in the first place.
> >
> > Although the monitoring environment at the time of capture made it seem=
much worse than it actually ended up being. The odd thing was that I almos=
t didn't bring the headphones to monitor with on that occasion. Now I alway=
s bring them regardless. Even if you trust your gear, you never know what y=
ou're recording at the time of capture unless you monitor what you're recor=
ding. Having that immediate feedback lets you know that it's there, and oth=
erwise makes you search for the source. If you go back after the fact and i=
t was a military aircraft carrier at sea, it might not be there anymore. An=
d you'll never be able to replicate the problem. And always wonder what tha=
t was. If it is the mics you might be able to identify if it was just a loo=
se connection or something else easily preventable. And otherwise correct t=
he problem on site and get a flawless recording.
> >
> > It could have also been a bird standing over your mic making noise. Or =
baby turtles buried in the sand near by hatching. Without a visual record o=
r being there to investigate, we may never know.
> >
> > - James
> >
> >
>
>
>
>
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