Questions tagged [hydrophone]
The hydrophone tag has no usage guidance.
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Unknown underwater acoustic sound source
I often have to deal with spectrograms similar to the one below, I have some ideas as to what the different signatures might come from but I still have some doubts. Do you have any idea as to what ...
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Looking for a suitable hydrophone where data can be monitored remotely (does it exist?)
Methodology problem: If soundtrapping whales with an array of hydrophones that are set out for ~1 year underwater, is data collection purely physical? As in do you have to wait until the end of the ...
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Hydrophone calibration in a tank vs open water?
I’m looking to calibrate some hydrophones (specifically SoundTrap 300HFs, but perhaps this applies more broadly). I’m aiming to compare the SoundTrap hydrophone with a reference one, roughly following ...
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How do I format EVO 256GB and 512 GB using the SoundTrap ST600 software?
When I put a new SD card in the soundtrap, the software gives me IO error i have try to format it according to the user's manual but when I insert this new card, the software doesn't react. This doesn'...
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Replace Hydrophones on ST500?
We have 2 x ST500s with hydrophone issues. One recorded static on a 4-month deployment (heartbreaking) and the other had a bite taken out of it (made for a good recording).
I'm wondering whether it's ...
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How do I format the EVO 256GB SD cards using the SoundTrap ST600 software (version 4 up)
First time user of the SoundTrap Host (version 4.0.13.25535) here. When I insert the EVO 256GB SD card using a card reader, there's no PC prompt warning (which means it is formatted to PC style I ...
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SoundTrap 4300 CH1 Faint Signal & Banding
We have collected 2 channeled recordings from two different ST4300 units, and more recently we have noticed that the signal in CH1 looks really weak. This has occurred in most but not all new ...
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Spectra Plus wav files not correct duration
I'm not sure if this is an issue with SpectraPlus or something else, but I heard others had similar problems with different software. I record with two hydrophones with a soundcard + monitoring it ...
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Can I use MEMS microphones to record underwater sounds?
I am looking for a very cheap way to record sound underwater. I am mostly interested in recording low frequencies (i.e. ~ [10 - 5000] Hz). I have seen a few papers on MEMS technology to record sound ...
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How to Remove Hydrophone Alarm from the First 3 Seconds of Every Recording
I am currently doing soundscape analysis across three years. However, the data from one of the years has a hydrophone alarm while the other two years do not. As you can understand, this is a problem ...
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What affordable hydrophone options exist for in-the-field listening?
I am looking to purchase a hydrophone and speaker system that I can use to identify singing humpback whales while at sea, in order to deploy different tags to better understand song behavior on ...
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How long do hydrophone (/microphone) calibrations last for?
A colleague asked the room this the other day and nobody could confidently answer this... How long, after an acoustic sensor has been calibrated, is its calibration curve trustworthy for?
There was ...
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Does anyone know of a compact, stereo underwater recorder (other than ST440/640)?
I'm looking for a commercial source of compact underwater recorder with inputs for at least two hydrophones. Ocean Instruments is not currently marketing their Soundtrap 440 or 640 recorders, so ...
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Recommendations for deep sea hydrophone calibration - US West Coast
I would like recommendations of where to get 7 deep-sea hydrophones fully calibrated. Units are SonoValuts (purchased new from Develogic) and the hydrophones are Neptune D/60. Recorders were ...
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Many time Hydrophone recording consist of Chain noise at regular interval. How to minimize this unintended sounds?
I was analyzing some marine data from the Red sea. I found some sound structures which didn't look like any biophony.
When I listen to this sound, it looked like some chain noise. since I didn't have ...
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