It sounds like a problem in one of your hydrophones. Are waves flooding
over it? It sounds like you can hear gas bubbles in the recording.
This loud chirp appears to occur every time a wave rolls over it. It
could be some kind of pressure settling thing. Can you recreate it by
dropping it quickly into the water?
On 7/30/2010 5:07 PM, James Shatto wrote:
>
>
> The loud chirp of sorts sounds man made. A radar sweep or something?
> Near a military base, major airport, or other sources? There's a
> sound of something digging near the mic, but I don't think it's the
> source of that other sound. The other one is a bit too metered, a bit
> too consistent in amplitude. Perhaps one of the hydrophones is more
> sensitive to it than the other. If you were to do some math on the
> timestamps and intervals it'd probably show a pattern. A ship at sea
> riding the waves might account for the minor absence of that at some
> of the intervals.
>
> - James
>
> --- On Fri, 7/30/10, Marinos Koutsomichalis <
> <marinos%40agxivatein.com>> wrote:
>
> From: Marinos Koutsomichalis <
> <marinos%40agxivatein.com>>
> Subject: [Nature Recordists] what is this creature/sound ?
> To: "Nature Recordists" <
> <naturerecordists%40yahoogroups.com>>
> Date: Friday, July 30, 2010, 12:19 PM
>
>
>
> I buried a couple of hydrophones into the sand underwater in a remote
> beach - only one of them picked this sound, so I guess it might be sth
> living in the sand ??
>
> anybody has any clue ??
>
> here are the recordings :
>
> http://soundcloud.com/marinos/sets/hydrophone-recordings
>
> and this is where I recorded it :
>
> http://pininthemap.com/d7b2e0bc48ba2e503
>
>
>
>
>
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