Questions tagged [fieldwork]

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4 votes
1 answer
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What are folks doing with extra microSD card adapters?

With the amount of ST600 deployments we do, I order a lot of microSD cards. Every time they come with an adapter, which I do not need more than 2 or 3 on hand. I have a dedicated microSD card case to ...
etgriffiths's user avatar
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2 votes
3 answers
66 views

How to avoid that cables get entangled in the field?

Does anybody have an advice to keep cables from entangling horribly during field recording? I have the cable from the microphone and the cable from the headphones, both longer than I can handle with ...
lframond's user avatar
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5 votes
1 answer
81 views

Audiomoths availability

I am new to this Forum so hopefully I can address my question effectively. I am a grad-student in Ecology and I am planning my field season for this summer. I am needing about 10 Audiomoths but they ...
Katherine González's user avatar
10 votes
10 answers
1k views

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 ...
Bark95's user avatar
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4 votes
2 answers
138 views

Is there any bioacoustics research team(s) in New York City (USA)? [closed]

I'm a science journalist in New York City (USA) interested in reporting on bioacoustics research. Does anyone know of (or do!) any bioacoustic research in or near New York City (~3-hr drive)?
Zoe Grueskin's user avatar
19 votes
6 answers
2k views

Can you have SoundTrap recorders as carry-on luggage in a plane?

I will be travelling in the field by plane with a SoundTrap recorder and its hydrophone. It will be an international flight (USA to Canada) with Air Canada. I am planning to take this as a carry on ...
Xavier Mouy's user avatar
8 votes
1 answer
87 views

Resources specific to bioacoustics fieldwork in terrestrial settings

I'm a practitioner who has come into bioacoustics from a non-ecology background, as my practice up to 2020 was largely confined to sound art, field recording and holistic aspects of acoustic ecology. ...
Tristan Louth-Robins's user avatar
8 votes
2 answers
176 views

What amplitude do you use for playbacks?

When performing playback experiments with birds, is there a biologically relevant source level for song playbacks? I have read that a standard value is 90 dB @ 1 m, however I could not find a good ...
lframond's user avatar
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10 votes
5 answers
74 views

Where do you put a terrestrial recorder if you have no freestanding structures to attach it to, and also can't put a stake in the ground?

I have a terrestrial acoustic monitoring situation that presents two challenges: Acoustic monitoring is being conducted in an area with limited options for attaching the units (i.e., very few ...
Cathleen B's user avatar
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11 votes
2 answers
151 views

Pros and cons directional mic vs parabola

While searching through the bird song literature, I realized there are two schools for recording songs. Some people use a directional microphone and some people use a parabola. I was wondering why to ...
lframond's user avatar
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18 votes
4 answers
94 views

Using a Raspberry Pi (Or Similar) to build an underwater recording device?

I am curious if anyone has had any experience building an acoustic recorder from a small, cheap computer like a Raspberry Pi. I have a detection algorithm I wrote in Python and I know can run on an ...
etgriffiths's user avatar
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7 votes
3 answers
61 views

leaving mics in a cave during fieldwork

I'm recording bats in a cave with many small (Knowles SPU-0410), and big (Sanken CO-100) mics. The cave is mostly isolated from the outside, with a temperature between 10-15C inside, and it could get ...
Thejasvi's user avatar
  • 4,070
7 votes
1 answer
55 views

Reliable lousdpeaker for low frequency noise playback?

For an experiment on the impact of traffic noise on bird behaviour, I tried to playback some low frequency traffic noise with a fixed amplitude. While (trying to) adjust the noise amplitude, I ...
lframond's user avatar
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8 votes
1 answer
51 views

Measurements to know if my field-recordings are good?

Fieldwork means having all the equipment in place to record the animals (in my case bats) when I see them. I try to look at the audio as soon as they're recorded to check if the settings are okay. I ...
Thejasvi's user avatar
  • 4,070
5 votes
1 answer
29 views

Methods to segment CF and FM components of a call?

I have single-channel recordings of horseshoe/rhinolophid bats which have call shapes with a 'tabletop' or 'staple-pin' shape. (See spectrogram below). The flat portion is the 'constant-frequency' ...
Thejasvi's user avatar
  • 4,070
14 votes
6 answers
106 views

Estimating distance accurately in the field for bird call source levels?

I'd like to estimate the distance at which the bird is singing from the point of recording, to then finally get the source level from one microphone. I've seen studies, and heard from colleagues use ...
Thejasvi's user avatar
  • 4,070
8 votes
3 answers
71 views

how do I get rid of multi-harmonic lines in my recordings?

I'm using a DC-AC converter to run my audio-interface in the field. Everytime I use the converter to make recordings i see strong multi-harmonic 'lines' in my spectrogram. In the lab (when connected ...
Thejasvi's user avatar
  • 4,070
2 votes
2 answers
26 views

software to trigger and run recordings with USB soundcards

I'm looking to trigger recordings as bats pass by my mic array.l, and also to potentially run playbacks too through the soundcard (it has both ADC and DAC capabilities). I have an ASIO based USB ...
Thejasvi's user avatar
  • 4,070
6 votes
2 answers
67 views

Will be recording vocalisation of an understudied species, with 192 kHz is my sampling rate high enough?

I will be performing echolocation call recordings of an understudied bat species that roosts in caves. Many studies use very high sampling rates (>=384 kHz), but I currently only have a sound card ...
Thejasvi's user avatar
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