“最强大脑”出题者董卫华：地理空间认知领跑者
百度 对具有海口户籍，火化后实行树葬、花葬、壁葬、草坪葬、海葬等绿色生态、节地葬法的，海口市政府再给予一次性补助2000元。
The mystery-sound tag has no summary.
9 questions
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3
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Very high frequency sounds in Northern France
In the North of France, we have several recordings full of very high-frequency dolphin-type sounds (like clicks, whistles, calls?, burst pulses. etc...) with almost all frequencies above 40kHz up to ...
4
votes
1
answer
139
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Low-Frequency (likely baleen whale) Sound from Unknown Source - Oregon coast
Greetings Bioacoustics Community! I am looking for a bit of input regarding a set of low-frequency variable calls that are likely of baleen whale origin. The data were collected in April of 2023 off ...
- 1,157
6
votes
4
answers
184
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Help Identifying Low-Frequency Sound
hoping to get some assistance identifying this sound type. I'm currently in the process of reviewing some data collected from a stationary hydrophone off the southeastern coast of Vancouver Island, ...
7
votes
3
answers
1k
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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 ...
- 620
5
votes
2
answers
157
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High Frequency broadband sound at night in a recording - can I rule out biophonic sources?
I have conducted passive acoustic monitoring at a nature reserve (a wetland, near a city and two medium-sized roads).
At night only, I have a strange source of sound that goes on and off every now and ...
- 313
9
votes
1
answer
96
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Mystery Marine Animal Sound off Georgia USA in Western Atlantic
I am trying to learn the source of the sound in the spectrogram below. It has been recorded in early to late winter (January/February) on the shelf (25 m depth) off the US state of Georgia in the ...
- 426
10
votes
1
answer
144
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crackling/clicking sound from agricultural field
I was cycling by an agricultural field that had cut plants in it in southern Germany (near the Max-Planck for Or ithology) last summer. The remaining stems seemed brown and dried up. As a light ...
- 4,050
10
votes
1
answer
99
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Mystery marine animal vocalization in spring in the Bering Strait
I have manually analyzed acoustic data (Oct-May 2009-2021) from a moored hydrophone in the Bering Strait (65.78, -168.57) — about 15 km from Little Diomede and 24 km from mainland Alaska.
The ...
- 2,839
8
votes
1
answer
87
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Unknown upswept pulsed sound recorded offshore Peru
What is this sound from offshore Peru? I recorded this sound offshore Peru and called it the “pacman” sound for obvious reasons. This was recorded from a towed hydrophone array from a large scale ...
- 3,694