Acoustic sensors enable efficient and non-invasive monitoring of a wide range of species, including many that are difficult to monitor in other ways. Although they were initially limited in application scope largely due to cost and hardware constraints, the development of low-cost, open-source models like the Audiomoth in recent years has increased access immensely and opened up new avenues of research. For example, some teams are using them to identify illicit human activities through the detection of associated sounds, like gunshots, vehicles, or chainsaws (e.g. OpenEars).
With this relatively novel dimension of wildlife monitoring rapidly advancing in both marine and terrestrial systems, it is crucial that we identify and share information about the utility and constraints of these sensors to inform efforts. A recent study identified advancements in hardware and machine learning applications, as well as early development of acoustic biodiversity indicators, as factors facilitating progress in the field. In terms of limitations, the authors highlight insufficient reference sound libraries, a lack of open-source audio processing tools, and a need for standardization of survey and analysis protocols. They also stress the importance of collaboration in moving forward, which is precisely what this group will aim to facilitate.
If you're new to acoustic monitoring and want to get up to speed on the basics, check out these beginner's resources and conversations from across the WILDLABS platform:
Three Resources for Beginners:
- Listening to Nature: The Emerging Field of Bioacoustics, Adam Welz
- Ecoacoustics and Biodiversity Monitoring, RSEC Journal
- Monitoring Ecosystems through Sound: The Present and Future of Passive Acoustics, Ella Browning and Rory Gibb
Three Forum Threads for Beginners:
- AudioMoth user guide | Tessa Rhinehart
- Audiomoth and Natterjack Monitoring (UK) | Stuart Newson
- Help with analysing bat recordings from Audiomoth | Carlos Abrahams
Three Tutorials for Beginners:
- "How do I perform automated recordings of bird assemblages?" | Carlos Abrahams, Tech Tutors
- "How do I scale up acoustic surveys with Audiomoths and automated processing?" | Tessa Rhinehart, Tech Tutors
- Acoustic Monitoring | David Watson, Ruby Lee, Andy Hill, and Dimitri Ponirakis, Virtual Meetups
Want to know more about acoustic monitoring and learn from experts in the WILDLABS community? Jump into the discussion in our Acoustic Monitoring group!
Header image: Carly Batist
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- @capreolus
- | he/him
Capreolus e.U.
wildlife biologist with capreolus.at
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- @diego_lizcano
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Wildlife biologist interested in biodiversity monitoring and the conservation of mammals. Passionate photographer.
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TerrOïko
I am an ecological data engineer at Terroïko, where I work on OCAPI, a platform for semi-automatic camtrap data annotation, biodiversity data interoperability and biodiversity indicators.
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Aarhus University
Biologist and Research Technician working with ecosystem monitoring and research at Zackenberg Research Station in Greenland
- 12 Resources
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Centre national de la recherche scientifique (CNRS)
Behavioural ecologist @CNRS in France - working mostly on ungulates in Europe and Africa
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- @shana
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I am a Senior Research Scientist in the Department of Human Centered Design and Engineering at the University of Washington. I am a researcher with the eDNA Collaborative and Co-Director of the Pacific Marine Energy Center.
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- @douggillespie
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University of St Andrews
PAMGuard software developer
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- @MattyD797
- | He/Him
I am studying biotic problems with abiotic intelligence. My research focus is in computational ecology within fishery acoustics, machine learning, remote sensing, and combining visual and audio species identification systems.
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- @hjayanto
- | He/Him
Your friendly Indo-Crocky-Croc
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I'm a software developer. I have open source projects in practical object detection and alerting that is well suited for poacher detection and a Raspberry Pi based sound localizing ARU project
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Read in detail about how to use The Inventory, our new living directory of conservation technology tools, organisations, and R&D projects.
1 May 2024
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1 May 2024
Technology to End the Sixth Mass Extinction. Salary: $132 - $160k; Location: Seattle WA; 7+ years of experience in hardware product development and manufacturing; View post for full job description
1 May 2024
TBC is looking for an applicant to lead on the design, analysis and reporting of data from a wide range of innovative bat population monitoring surveys with a particular focus on passive acoustic monitoring, undertake...
24 April 2024
Full-time 3 year postdoctoral fellowship in Escondido, CA
22 April 2024
In a recent publication we tested Underwater Passive Acoustic Monitoring (UPAM) as a feasible non-invasive technique to study the calling behavior of therathened aquatic Andean frogs under natural conditions in the...
6 April 2024
What can soundscapes tell us about ecosystem functioning and health? We are looking to hire a postdoctoral researcher in ecoacoustics for Nature Recovery at Oxford
2 April 2024
Hussey Labs seeks a senior post-doctoral researcher/senior research associate for movement ecology of Greenland halibut in the context of fisheries management across Baffin Bay-Davis Strait, Eastern Canadian Arctic.
13 March 2024
Catch up on the conservation tech discussions and events that happened during World Wildlife Day 2024!
7 March 2024
Do you know anyone interested in this position? Let them know by sharing widely.
27 February 2024
The Ecological Acoustics and Behavior Lab at the University of New Hampshire seeks a PhD student to join our lab to investigate how forest habitat affects moose occupancy and soundscape in northern New Hampshire
13 February 2024
The primary focus of the research is to explore how red deer movements, space use, habitat selection and foraging behaviour change during the wolf recolonization process.
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42 Products
Recently updated products
Description | Activity | Replies | Groups | Updated |
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Thank you @carlybatist , @Freaklabs and @MK . The inputs are very useful and I am progressing on my project based on that. Appreciate a lot. |
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Acoustics, AI for Conservation | 1 year 10 months ago | |
Fascinating article, combining machine learning and acoustical signals to correlate coral reef health.https://www.sciencedirect.com/science... |
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Acoustics, AI for Conservation, Marine Conservation | 1 year 11 months ago | |
Hi Julien,I use this mic for my raspberry pi setup and it works well picking up bird species singing in our garden while the mic and raspberry sit under our roof tiles.Greetings,... |
+2
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Acoustics | 1 year 11 months ago | |
Koen, Hi - the config for the audiomoth looks fine (you could put a high-pass filter on to cover frequencies 12-96 kHz only). The scheduler is not set (you have 0 files per day... |
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Acoustics | 2 years 1 month ago | |
Would anyone know about the recommended number of months to conduct acoustic monitoring of sharks. This is part of a small grant project.... |
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Acoustics | 2 years 2 months ago | |
We've been using 18650 lithium ion protected cells in our BAR recorders since 2013. The protected cells are great because the protection circuitry kicks in to disconnect the... |
+7
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Acoustics | 2 years 3 months ago | |
Unfortunately, the ASA is currently planning to do an in-person meeting only. Things may change if the COVID situation doesn't improve in May, but it is hard to predict at... |
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Acoustics | 2 years 3 months ago | |
Hi all, For everyone's reference but also a new one for your list Tessa (just checked and it isn't there yet) - Fuentes, M., Salamon, J., Zinemanas, P.,... |
+9
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Acoustics | 2 years 5 months ago | |
Hi Nicole-- We've already chatted about this function, and I think the answer is "quite a bit" for a lot of deployments. The more accurately the proposed function... |
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Acoustics | 2 years 6 months ago | |
Hi Wildlabbers, This week's Tech Tutor Jamie MacAulay is talking about how to use and analyze large acoustic data using... |
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Acoustics, AI for Conservation, Marine Conservation | 2 years 6 months ago | |
Tessa-- Thanks for chiming in. I agree with a lot of what you're saying, both about what RFCX is likely to actually be doing and about the need for more open labeled... |
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Acoustics | 2 years 6 months ago | |
We are filming with the Australian Acoustic Observatory soon with one of the Solar BARs we created (it's continuously recording for four years!) and were wondering if... |
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Acoustics | 2 years 7 months ago |
Your HydroMoth experience!
29 July 2022 1:38pm
1 May 2024 5:51pm
Hey! I would recommend a few things:
1) set up at least two in the same site kind of back to back or side to side if you have that many. Directionality can influence the number of calls you get and it's just good to know your error rate.
2) Experiment with breaks and recording duration. You wont collect anything if the write time is not long enough to record to your SD card and you'll get empty files.
3) Clean your device every time you take it out or see visible biofouling. Also, add silicon grease every time to your O-ring. Take it out with an O-ring pick and clean the plastic seal, looking for any type of sand/mud/debris. We've had a few flooding incidences, but this is probably because we open them all the time.
4) lower the frequency rate the more data you can collect, so keep it as low as your frequency of interest without clipping your calls. Fish are lower than pretty much everything (2kHz-3kHz).
I hope this helps!
2 May 2024 6:45pm
Oh wow, thank you so much!!!
I will keep that four advices in mind!
WILDLABS AWARDS 2024 - Developing AudioMoth for the detection of infrasonic elephant rumbles
11 April 2024 7:35am
11 April 2024 4:05pm
Awesome project!!
2 May 2024 6:24pm
Very interesting project! I had a few questions or things to consider. Funny enough, I work next to the Elephant Listening Project (ELP) in Central Africa. They've tried a few things to capture infrasonic sounds from these guys like with geophones, mics, and hydrophones, but while successful in Savannah elephant species, the dense forest and ground structure in Central Africa from my understanding increases the acoustic impedance and presented a challenge. Besides ground type, I'm also curious if there are differences in infrasonic vocalizations of Asian versus Central African elephants to consider? I think they'd be a great group to collaborate with, if you haven't reached out already!
The other question I had is if you're thinking of hardening the case? From what I've seen, elephants will break/play anything they find new. The acoustic swift team had to make a custom case for them so the elephants have a "less" likely chance of breaking them. Below is an example of a tusk versus a Pelican we keep around.
Hydromoth settings
9 May 2022 5:03pm
11 August 2023 8:10pm
Hi Ian,
I have hours of an unidentified creature recorded during overnight recording sessions with mutliple hydrophones. We think it is platypus but there is nothing to compare against that isn't from captive sounds. I am waiting on the Hydromoth to become available again so I can do longer term monitoring.
1 May 2024 5:26pm
Hi everyone, I just got my first hydromoth and wanted to test it for aquatic soundscape with interest in Tomistoma, Otter, boat traffic and maybe fishes too! But before that I maybe test it on zoos.
What are your advices, tips, or suggestion for first-time user? thank you!
1 May 2024 5:42pm
You won't get any audio if you don't allow enough time for the hydromoth/audiomoth to write. So when you do a continuous recording you need to experiment a little. I'm sure there is a formula to calculate this, but I haven't figure that out. I typically do 5 min recordings with 10 seconds of write/break time. I think this system is expecting you to subsample, so keep that in mind instead of a continuous recording.
I do 8kHz sampling and get about 7 days of data and then the voltage gets too low and you start getting SD card write errors and missing files.
In terms of analysis, I've had trouble understanding the directionality of the hydromoth and incorporating this into my studies. I always set up two at the same site to check the variability in my call detections and include this into my error analysis.
Acoustically Transparent Epoxy
26 April 2024 3:26pm
29 April 2024 9:19am
Sounds interesting.
We all used acoustic membranes.
Just like @BrettMargoSupplies suggested.
A friend of mine had really bad results with animal borne
mics where the pcb was potted and the mic was just covered by a thin layer of epoxy where it hit the surface.
That was not working good!
Greetings from thhe woods,
Robin
29 April 2024 5:37pm
Thanks for the reply. I'm curious to hear more about your friend's issues with this set up!
1 May 2024 5:35pm
Same issues here. A MEMS is a great idea to pot, but you really need a piezoelectric element for this to work and not a MEMS based on capacitance (btw they're all capacitance, except for one now discontinued...). It was originally made by Vesper, but the company was bought out last year and the MEMS is no longer made.
This is because you're no longer really doing a typical microphone, this would be a contact type hydrophone. For waterproofing, you can actually get a waterproof MEMS. As long as your not submerging this for an extended period, it should do the job. Be sure to keep the cable short between the PCB and the mic as you'll get noise as I've experienced.
For generally answering your question on the "best" epoxy to with sound transparency, in general the harder the material the lower the acoustic impedance. I use Epotec 301 resin with a hardness of 85. Your shape will also influence the resonance frequencies, meaning the flat frequency response will now be distorted and you'll probably have distorted audio. .
WILDLABS AWARDS 2024 - Underwater Passive Acoustic Monitoring (UPAM) for threatened Andean water frogs
30 March 2024 3:54pm
5 April 2024 12:13pm
Congratulations, very exciting! Keep us updated!
7 April 2024 6:09pm
This is so cool @Mauricio_Akmentins - congrats and look forward to seeing your project evolve!
1 May 2024 5:17pm
Congratulations! My first hydromoth was just arrived yesterday and so excited! Looking forward for the update from your project!!!
The Inventory User Guide
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Hiring Chief Engineer at Conservation X Labs
1 May 2024 12:19pm
Affordable acoustic monitors for "whispering" bats?
30 April 2024 8:31pm
30 April 2024 9:25pm
Thank you, Carly!
Do you know if these are sensitive enough to detect the quieter bat species?
30 April 2024 11:19pm
I don't know specifically, but you could reach out to Wildlife Acoustics support or Phil (respectively) and I'm sure they would have details for you! The Echometers have the specs (mic sensitivity, etc.) published on the website as well if you want to check those first.
30 April 2024 11:28pm
Also some other bat experts I'd recommend reaching out to, if you haven't already (for this and any bat acoustic questions) - Adrià López-Baucells, Nils Bouillard, Kate Jones, Stuart Newson, plus obviously anyone at the big orgs like Bat Conservation Int'l, etc.
Attaching a directional microphone to a Wildlife Acoustics ultrasonic recorder?
29 April 2024 4:47pm
30 April 2024 4:28pm
Hi Luke, sounds like an interesting project! One thing to note is the ultrasonic Wildlife Acoustics unit you're looking at is already fairly directional. Take a look at the horizontal directionality plot towards the bottom:
You can see that for the relevant frequencies for slow lorises ultrasonic calls (40-60 kHz), there is 25-30 dB difference between 0 and 180 horizontal degrees. It's not perfect, but is close to some directional mics, and if it works well enough for your project it would save a lot of time and testing!
If you do choose to integrate an external directional microphone, be careful with microphone placement to avoid potential ultrasonic reflections from any hard flat surface like a tree trunk, water surface, or the instrument housing itself. Here's an example of some echo calls from reflective surfaces from bat vocalizations:
It would be helpful to hear how you plan on obtaining behavioral information (and what kind) to correlate with vocalizations? Observations, cameras, biologgers, etc.? This could inform responses a bit more.
30 April 2024 6:19pm
Hi Jesse,
Thank you so much for your reply and for the fantastic knowledge and resources! I was unfamiliar with the plots, so thank you for providing some interpretation- I will have to work to better understanding them. This may change things (I was going off of experience from field work with the last iteration of this WA recorder which had omnidirectional recording) and I may choose to pilot the recorder without an external microphone this summer.
Regarding my plan for collecting behavioral data, I plan to follow 15 wild individuals in a reserve in Thailand (mostly dry evergreen and dry dipterocarp forest with some human modified areas). I intend to use instantaneous focal sampling to observe lorises in two shifts between 18:00-06:00h. During these focal follows I will record all behaviors at 5-min intervals and use all-occurrences sampling for social and feeding behaviors, using an established slow loris ethogram. Simultaneously, I plan to record vocalizations, with the help of a research assistant and field guide. So we will be carrying the recorder with us during behavioral data collection. I intend to match up the timestamped loris vocalizations with the behavioral data to understand the call's function.
30 April 2024 7:00pm
If you have the resources, I would suggest testing the sensitivity and directionality of the system at relevant frequencies both with and without an external mic, and let the results dictate which will be best for your case study.
Another thing to think about since you are manually taking the recordings is if a WA unit is really necessary. You're paying for the technology of a remote system without needing it. Other cheaper handheld recorders (such as Zoom recorders) could free up $$ for a higher quality directional microphone. Although of note is that common Zoom recorders like the H4n only sample up to 96kHz for which the upper frequency limit (48kHz) is getting very close to the frequencies you're likely wanting to measure.
The Bat Conservation Trust - Research Scientist (Quantitative ecology)
24 April 2024 7:29pm
WILDLABS AWARDS 2024 - Fostering bat conservation and citizen science in Zimbabwe: Establishing bat groups and training individuals to use bat detectors
4 April 2024 12:12pm
8 April 2024 9:29am
Thank you Carly!
We have over 60 bats recorded in Zimbabwe
19 April 2024 2:16pm
Abigail. I would love to know more and potentially support the initiative. Please send me more info on [email protected]
24 April 2024 2:27pm
Thank you Robyn. Sure I will send more information to your email
Drop-deployed HydroMoth
2 April 2024 10:20am
5 April 2024 2:04pm
Hi Sol! This seems like an awesome project! I have a few questions in response: Where were you thinking of deploying this payload and for how long?
Regarding hydromoth recorders, there have been several concerns that have popped up in my work with deploying the them at this depth because it's a contact type hydrophone which means it utilizes the case to transmit the sound vibrations of the marine soundscape to the microphone unlike the piezo element based hydrophones.
- At 30-60m you will likely have the case leak after an extended period of time if not immediately. The O-ring will deform at this depth, especially around the hinge of the housing. The square prism shape is not ideal for deep deployments you describe.
- After that depth and really starting at about 50m, a major concern is synthetic implosion from the small air pocket of the hydromoth not having a pressure release valve and lithium ion batteries getting exposed to salt water. This type of reaction would cause your other instruments to probably break or fail as well.
- You are unlikely to get a signal with a reinforced enclosure. The signal is generated via the material and geometry of the housing. The plastic will probably deform and mess with your frequency response and sound to noise ratio. If you place it against metal, it will dampen the sound quite a lot. We tried to do this, but the sensitivity is quite low with a large amount of self noise.
A side note: for biodiversity assessments, the hydromoth is not characterized and is highly directional, so you wouldn't be able to compare sites through your standard aocustic indices like ACI and SPL.
That said if you are deploying for a short time, a hydrophone like an Aquarian H1a attached through a penetrator of a blue robotics housing that contains a field recorder like a zoom recorder may be optimal for half a day and be relatively cheaper than some of the other options. You could also add another battery pack in parrallel for a longer duration.
15 April 2024 6:53am
Hi Matthew,
Thanks for your advice, this is really helpful!
I'm planning to use it in a seagrass meadow survey for a series of ~20 drops/sites to around 30 m, recording for around 10 minutes each time, in Cornwall, UK.
At this stage I reckon we won't exceed 30 m, but based on your advice, I think this sounds like not the best setup for the surveys we want to try.
We will try the Aquarian H1a, attached to the Zoom H1e unit, through a PVC case. This is what Aquarian recommended to me when I contacted them too.
Thanks for the advice, to be honest the software component is what I was most interested in when it came to the AudioMoth- is there any other open source software you would recommend for this?
Best wishes,
Sol
21 April 2024 7:10pm
Hey Sol,
No problem at all. Depending on your configuration, the Audiomoth software would have to work on a PCB with an ESP32 chip which is the unit on the audiomoth/hydromoth, so you would have to make a PCB centered around this chip. You could mimic the functionality of the audiomoth software on another chip, like on a raspberry pi with python's pyaudio library for example. The problem you would have is that the H1A requires phantom power, so it's not plug and play. I'm not too aware with the H1e, but maybe you can control the microphone through the recorder that is programmable through activations by the RPi (not that this is the most efficient MCU for this application, but it is user friendly). A simpler solution might be to just record continuously and play a sound or take notes of when your 10 min deployment starts. I think it should last you >6 hours with a set of lithium energizer batteries. You may want to think about putting a penetrator on the PVC housing for a push button or switch to start when you deploy. They make a few waterproof options.
Just somethign else that occured to me, but if you're dropping these systems, you'll want to ensure that the system isn't wobbling in the seagrass as that will probably be all you will hear on the recordings, especially if you plan to deploy shallower. For my studies in Curacao, we aim to be 5lbs negative, but this all depends on your current and surface action. You might also want to think about the time of day you're recording biodiversity in general. I may suggest recording the site for a bit (a couple days or a week) prior to your study to see what you should account for (e.g. tide flow/current/anthropogenic disturbance) and determine diel patterning of vocalizations you are aiming to collect if subsampling at 10 minutes.
Cheers,
Matt
Thoughts on RooBadge?
2 April 2024 2:55pm
5 April 2024 12:31pm
Sound deterrents to prevent collisions with Kangaroos in Australia have been sold for many years. None have been shown to work. Whether the Volkswagen device will be any better waits to be seen. Collision data will have to be collected for a while to see if the VW device has any effect on collision rate.
8 April 2024 12:49am
That is an interesting concept, and it would be great if something out there worked. In the meantime, I will try not to drive at dusk 🦘
At one point, I knew the "sonic" animal guards were the most stolen components of cars. You head in, get groceries, and come out, and they are gone. They weren't on the car long enough for me to confirm that would work
20 April 2024 2:40am
Totally agree.
Inititally sceptical until I saw Helena and Graeme were involved.
MJ
4th International workshop on vocal interactivity in-and-between humans, animals, and robots
19 April 2024 3:03pm
Webinar: Bats and Wind Energy
18 April 2024 6:11pm
WILDLABS AWARDS 2024 - BumbleBuzz: automatic recognition of bumblebee species and behaviour from their buzzing sounds
12 April 2024 8:37am
12 April 2024 8:41pm
Super great to see that there will be more work on insect ecoacoustics! So prevalent in practically every soundscape, but so often over-looked. Can't wait to follow this project as it develops!
17 April 2024 10:23am
Thanks Carly! I will keep anyone interested in this project posted on this platform. Cheers
WILDLABS AWARDS 2024 - TimeLord: A low-cost, low-power and low-difficulty timer board to control battery-powered devices
5 April 2024 3:29pm
16 April 2024 9:34am
Thanks @Freaklabs, I think you'll really enjoy getting involved with this too as we're looking for input from makers in the community to get the most from the approach and to capture features and usability ideas from a large number of people.
I've a new modular drop-off tag build using @Rob_Appleby's original SensorDrop board that I think would be great for this project too to see if we can drop different compartments, or do various different timed events with the one TimeLord board.
Most importantly, we have to make it play a MIDI version of the DoctorWho theme song when you arm the device. That has to be the #1 feature if you ask me!
16 April 2024 9:35am
Reminds me that we should look at both terrestrial and marine applications when we get stuck in to the demo builds to make sure we cover use cases
16 April 2024 10:22am
'Most importantly, we have to make it play a MIDI version of the DoctorWho theme song when you arm the device. That has to be the #1 feature if you ask me!'
Seconded!
Wildlife Drones will be at the 21st Australasian Bat Society Conference
9 April 2024 6:03am
WILDLABS AWARDS 2024 - FinDrop: Accessible Acoustic Monitoring for Mesophotic Marine Environments
5 April 2024 10:22pm
7 April 2024 6:07pm
Congrats @MattyD797 and team!!! We do a lot of work in the underwater bioacoustic realm and your tool certainly seems like it would be a great instrumental addition to the community. Look forward to learning more about your project!
Liz
Underwater advertisement call of the threatened Telmatobius rubigo (Anura: Telmatobiidae
6 April 2024 9:56pm
Bioacoustic device security in urban parks
8 March 2024 2:49pm
24 March 2024 4:53am
Yes, I agree with Panji......make sure you have notes of where you put them and remember that photos of trees without leaves look completely different 6 months later......not that I would ever make that mistake.........well not again......especially after spending 2 days trying to find 3 ARU's.
24 March 2024 9:38pm
We suggest and use Python Locks for urban areas here in Australia. Can also screw the Mini 2 to a tree or phone post with the python lock.
5 April 2024 12:55pm
We've deployed passive acoustic monitors in various urban environments without any issues of theft, even in locations where camera traps and other technology has been historically taken or vandalised. I think acoustic sensors generally look less valuable than other technology, and I would recommend removing or covering any stickers or labels on devices that would otherwise make them more appealing! Placing them in hedgerows or on trees with some (but not too much!) foliage will help keep them well hidden too.
Not so silent spectators: How spectator vessels at international sailing regattas alter marine soundscapes
3 April 2024 4:50pm
Check out how water-based sporting events are impacting underwater noise pollution for marine life.
Seventh International Conference on the Effects of Noise on Aquatic Life
3 April 2024 4:34pm
Postdoctoral Research Associate in Ecoacoustics
2 April 2024 2:49pm
Think Wildlife Podcast | The Role of Bioacoustics in Conservation with Bourhan Yassin, Founder of Rainforest Connection
28 March 2024 11:27pm
Hi,
I am Anish and I'm new to this platform! I host the Think Wildlife Podcast and wanted to share a recent episode with Bourhan Yassini. We talk in-depth about the role of AI and bioacoustics in conservation. Tune in to listen more!
AI for Conservation!
4 March 2024 8:51pm
22 March 2024 12:29pm
Welcome, Have you considered participating in any of the AI for Good challenges. I find it is good way to build a nice portfolio of work. Also contributing to existing open source ML projects such as megadetector or to upstream libraries such as PyTorch is good way to getting hired.
22 March 2024 5:57pm
Thank you for the tip! I'll definitely consider contributing to open source projects and taking part in challenges :)
25 March 2024 5:22am
We could always use more contributors in open source projects. In most open source companies Red Hat, Anaconda, Red Hat and Mozilla, people often ended up getting hired largely due to their contributions on open source projects. These contributions were both technical such as writing computer code and non-technical such as writing documentation and translating tools in their local language.
1 May 2024 5:45pm
Vinegar is also a great solution! Let it sit overnight and then just scrub it off. As a warning if you don't clean it, your sensitivity does decrease. You might actually see this if you keep it out there for a month that the amplitude of your calls decrease over the month/you might detect fewer calls.