Questions tagged [echosounder]
The echosounder tag has no usage guidance.
4 questions
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What are these underwater, high frequency (20-45 kHz), upsweep signals?
In a recording from January 2023 in northern Norway (Skjervoy), I found a strange signal, that consist of upsweeps between 20-45 kHz (see spectrogram). We were recording humpback whales in the night ...
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Echosounder setting off automated whistle detector in PAMGuard - Help!
I have underwater acoustic recordings and am interested in marking out dolphin whistles. I am currently having to manually remove an echosounder (which has a bit of a sweep to it), as I do not want my ...
- 3,715
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How to interpret an echogram?
In several biologging studies that have used acoustic recording tags, I see graphs called "echograms" but I'm having trouble understanding them.
For example, here is one made from a sound-...
- 3,715
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How do I detect 50kHz echsounder in PAMGuard
I have collected a large (~10TB) dataset using SoundTraps recording at 576kHz to investigate harbour porpoise foraging behaviour around fishing nets.
I processed the data using PAMGuard's click ...
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