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Re: low-cost hydrophones suggestions

To: "Charles S. Henry" <>
Subject: Re: low-cost hydrophones suggestions
From: Jerome Sueur <>
Date: Tue, 10 Apr 2012 09:52:23 +0200

Where was it recorded?
This sounds like a Micronecta species.

Best regards,


Le 09/04/2012 14:56, Charles S. Henry a écrit :
This is a pretty cool recording.  It sounds like a field of goldenrod in mid to late summer! -- maybe these are the sounds of stridulating aquatic beetles (hydrophilids, gyrinids, dytiscids?) and water bugs (corixids, nepids, notonectids?).  Very little is known about sound production & communication within such underwater communities.

On 4/8/2012 8:25 AM, m("","x7");"> wrote:
Dear all,
thanks for your answers so far.
I realize I should have detailed more what our intentions
and expectations are, what is the other equipment involved

All this operation has not nor doesn't pretend a strictly
scientific approach+result.

Our aim is to record underwater fauna activity in relatively
small lakes and ponds.

The recording device we are using is a mere Tascam DR100 that
delivers 48V phantom power and ideally we'd like to avoid
hydrophones needing an additional preamp.

We already experimented with cheap and handmade solutions,
like piezoelectric transducers, with often quite nice results
(well, for our application anyway...)

Here's an example of what we have recorded with some piezo
underwater mics:
(by the way, I've no idea of what's that... could someone tell
me please?)
That was recorded in a pond. Using the same piezos in a lake,
nothing like that was picked up, all was silent (except some
far away motorized boats).

So, do you think investing in some low-cost hydrophones we
may achieve better results than the example above? Will it
allow to record some more details?

Many thanks

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