卓伟曝Baby与陈赫有超越亲密的关系，双方否认
29 questions
1
vote
0
answers
18
views
Hydromoth recording error - 0kb WAV files
I am using Hydromoth devices (configured using Audiomoth firmware) to conduct both short-term continuous recordings (i.e. a few hours) and long-term recordings using a sleep / record cycle.
I am ...
- 11
1
vote
1
answer
45
views
Sonobuoy disassembly: Is it worth it?
We've re-discovered a bunch of old Dowty Sonobuoys from 1990-1993. Before taking a much closer look, I wanted to gauge if it is worth trying to disassemble them to extract the hydrophone elements. I ...
- 67
2
votes
0
answers
27
views
Delay in recording with Sylence recorder
I am a beginner with setting up hydrophones and I am currently using a Sylence LP-220 recorder paired with a Colmar GP1516MS-LP hydrophone to investigate soundscapes. During some test runs, I ...
- 21
2
votes
3
answers
451
views
Where can I find good examples of hydrophone recordings of whales that I can compare my recordings to?
Where can I find high quality hydrophone recordings of whales to study and compare my hydrophone recordings with? Lots of noisy poorly recorded examples online and lots of whale song with mixed in ...
2
votes
1
answer
80
views
Suggestions for hydrophone piezo sensor
I am trying to understand which sensors would make good hydrophones, to then have these used by somebody building the circuit.
I looked up these two piezo MEMS microphones:
VA1210AA (sensitivity -28dB ...
- 21
2
votes
0
answers
77
views
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 ...
- 343
2
votes
3
answers
151
views
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 ...
- 21
3
votes
1
answer
70
views
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 ...
- 67
4
votes
2
answers
80
views
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'...
2
votes
1
answer
76
views
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 ...
- 21
3
votes
2
answers
96
views
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 ...
- 31
5
votes
2
answers
107
views
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 ...
- 548
3
votes
0
answers
67
views
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 ...
- 31
4
votes
2
answers
476
views
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 ...
- 593
3
votes
1
answer
51
views
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 ...
- 161