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
Petnerup
Animal tech startup founder
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Zoological Society London (ZSL)
Monitoring & Technology Lead, Conservation & Policy, ZSL
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- @Riley
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I'm a Data Scientist at Western EcoSystems Technology. I am interested in AI processing and statistical modeling of acoustic data and camera trap and drone imagery.
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PhD Student working on acoustics and hunting in tropical forests
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- @taylorcasalena
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sustainability strategist | nature & climate
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Dzanga-Ndoki national park biodiversity monitoring
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Orthoptera conservationist bioacoustics
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Julia Martínez Pardo et al., Published in Biological Conservation
4 June 2022
Microchip has just announced the 1 GHz SAMA7G54 single-core Arm Cortex-A7 microprocessor (MPU) with MIPI CSI-2 and parallel camera interfaces, as well as up to four I2S, one SPDIF transmitter and receiver, and a 4-...
3 June 2022
"A drone emitting orca sounds will be used in attempt to guide the animal, whose health is fast deteriorating"
1 June 2022
Couple of hot-off-the-press papers on different passive acoustic monitoring studies, including ones on manatees, coral reef fishes, woodpeckers, insects, and using ecoacoustic indices in marine soundscapes
29 May 2022
Article
Authors: Danielle I. Rappaport, Anshuman Swain, William F. Fagan, Ralph Dubayah, Douglas C. Morton
29 May 2022
We're proud to introduce the first WILDLABS On the Edge Fellows for 2022, Loretta Schindlerova and Meredith Palmer! Working alongside expert Edge Impulse mentors, these two fellows will use embedded machine learning to...
10 February 2022
Don't miss your chance to order the AudioMoth Underwater Case through GroupGets! This campaign is for a waterproof case designed specifically for AudioMoth version 1.2.0 (without the 3.5mm socket), and for use at depths...
11 January 2022
Article
Open Acoustic Devices have tested their new HydroMoth, an affordable marine acoustic tool that could open up new avenues for marine conservationists without budget for expensive hydrophones. Read the newly published...
5 January 2022
This article provides a review of deep learning (predominantly ML) used in marine ecology and considerations for its future directions in conservation. In plain language, the authors provide a methodology for training...
20 December 2021
The Monterey Bay Aquarium Research Institute has an extensive acoustic archive from underwater recordings and has made their valuable dataset available to researchers around the world via an open data registry on the...
5 November 2021
GroupGets has a Group buy campaign for a μMoth v1.1(Round 2), that runs till Sat, 06 Nov 2021 12:55:00 PDT. The μMoth v1.1 goes for a Single-unit price of $99.99 + shipping.To join this buy, kindly visit this page
4 November 2021
This article outlines how acoustic monitoring of bird species provides a means to study ecosystems with minimal disturbance and over wide areas. Birds are excellent indicator species, therefore, monitoring their trend...
21 October 2021
June 2024
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43 Products
Recently updated products
Description | Activity | Replies | Groups | Updated |
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If you search Digikey for a 'strain relief' you should be able to find a rubber grommet that will hold that mic without any additional machining. A blob of silicone will adhesive... |
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Acoustics | 1 day 5 hours ago | |
Hello everyone, We are in the process of developing a new MSc in Conservation Technology at my university and would welcome your... |
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Build Your Own Data Logger Community, AI for Conservation, Autonomous Camera Traps for Insects, Biologging, Camera Traps, Citizen Science, Climate Change, Acoustics, Community Base, Connectivity, Conservation Dogs, Conservation Tech Training and Education, Data management and processing tools, Drones, Early Career, Earth Observation 101 Community, East Africa Community, eDNA & Genomics, Emerging Tech, Ending Wildlife Trafficking Online, Ethics of Conservation Tech, Footprint Identification Technique (FIT), Human-Wildlife Conflict, Marine Conservation, Open Source Solutions, Protected Area Management Tools, Remote Sensing & GIS, Sensors, Software and Mobile Apps, Sustainable Fishing Challenges, Wildlife Crime, Women in Conservation Tech Programme (WiCT) | 1 day 7 hours ago | |
Thanks Carly! I had reviewed some of the help files, but clearly not the right ones!My email is [email protected] |
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Acoustics, Software and Mobile Apps | 2 days ago | |
Hi Tabitha, What recording settings were you using when you saw these differences? I've measured the consumption across some different firmware versions and I can't see any... |
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Acoustics | 6 days 11 hours ago | |
Wow.. Really exciting to see this effort. Congratulations on the award!I have been interested in this subject for a long time, as we have elephant-human conflicts in plenty in... |
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Acoustics | 1 week 4 days ago | |
Hello!Long time, no update. @StephODonnell suggested I post here with my thesis and some reflections. ---------------------------------------------------------TL;DR... |
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Acoustics | 3 weeks ago | |
I think I've landed on the Wildlife Acoustics Song Meter Mini Bat 2 for now, but I'm definitely interested to see how this cheaper tech progresses |
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Acoustics | 3 weeks 1 day ago | |
Hi Jesse,For a material to be acoustically transparent (in air), the speed of sound in the material times its density must match that of air. Realistically, any solid... |
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Acoustics, Biologging | 3 weeks 1 day ago | |
Hi Steph, We appreciate the support! Thanks for the tag and your help managing the community!Patrick |
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Sensors, Acoustics, Conservation Dogs, Emerging Tech, Open Source Solutions | 3 weeks 1 day ago | |
Hi Sol,If the maximum depth is 30m, it would be worth experimenting with HydroMoth in this application especially if the deployment time is short. As Matt says, the air-filed case... |
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Acoustics, AI for Conservation, Data management and processing tools, Emerging Tech, Sustainable Fishing Challenges | 3 weeks 1 day ago | |
Oh wow, thank you so much!!!I will keep that four advices in mind! |
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Acoustics | 3 weeks 2 days ago | |
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... |
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Acoustics | 3 weeks 3 days ago |
Acoustic monitoring fieldwork positions in Puerto Rico
22 February 2023 2:41pm
Texas Chapter of The Wildlife Society’s Annual Meeting 2023
20 February 2023 10:56pm
Research Assistants in Kitzes Lab
16 February 2023 4:12pm
Developing Two Non-invasive Survey Methods for Freshwater Ecosystems: Environmental DNA and Ecoacoustics
10 February 2023 10:41am
Interesting PhD thesis just shared via ResearchGate, looking at developing eDNA and bioacoustics to 1) detect invasive/endangered crayfish & identify rivers vulnerable to invasion, and 2) Describe pond soundscape ecology/phenology, & provide guidelines for survey design.
Swift Software Developer - Lab of Ornithology
10 February 2023 10:38am
Research Associate - Machine Learning (Underwater Sound)
10 February 2023 10:19am
Cleaning audiomoth circuit board
17 January 2023 11:42am
2 February 2023 8:13am
Hi Akiba,
thanks for your this great advice! I used the conformal coating on parts
of the PCB with exposed metal but was has hesitent using it on the "backside" with
all the resistors and transistors. Also what about the "back" of the microfon. Might this side be coated?
Do you have any experience with coatings @alex_rogers
Greetings,
Robin
9 February 2023 9:56pm
Cleaning the water damaged audiomoth boards is in full swing:
Left before, right after cleaning
Technical Officer – IMOS Animal Tracking Facility
7 February 2023 12:30pm
Commercially available connected audio sensors
2 February 2023 3:08pm
2 February 2023 3:55pm
Hi!
I am not aware of any such connected loggers/recorders but they would be nice.
The AudioMoths have been revolutionary in providing audologging at a low cost but they take a lot of "data muling" (carrying SD cards in and out of the field sites) and swapping of batteries.
Cheers,
2 February 2023 7:50pm
Hi Lars, thanks for the response. We are using lots of Song Meter Micro's atm and they have proved to be resilient. Just need something which doesn't involve going on site regularly - but get the data off.
3 February 2023 7:04pm
Rainforest Connection's (RFCx) Guardian devices may be of interest. They are solar-powered and have connectivity options for Wifi, GSM and satellite transfer. They've previously been used for detecting e.g., gunshots or chainsaws (using edge computing) and then sending positive detections/alerts to folks on the ground. RFCx also hosts Arbimon, a free, no-code software platform that facilitates analysis of audio data as well. Happy to chat more if you'd like to talk further about it!
Job: Building a network of conservation tech across continents
2 February 2023 1:50pm
Consultancy opportunity: Wildlife monitoring specialist
31 January 2023 11:26am
AI for Forest Elephants Challenge
25 January 2023 3:34pm
Pandas & Prose with Karen Bakker and David Thau
19 January 2023 11:55pm
Apply Now: AI for Conservation Office Hours
18 January 2023 5:15pm
International Congress for Conservation Biology
16 January 2023 2:53pm
Potential collaboration: integrating acoustics and NASA airborne remote sensing to monitor animal and habitat biodiversity
30 November 2022 1:17am
10 December 2022 6:18am
Although not a professor, I know a fair number through long-term association with scgis.org, and personally am using Audiomoths in collaboration with the UC System at the Blue Oak Reserve.
Blue Oak Ranch Reserve
Blue Oak Ranch Reserve (BORR) lies within the Upper Sonoran Life Zone. Approximately two-thirds of the site is drained by tributaries of Arroyo Aguague, itself a tributary of Coyote Creek (via Penitencia Creek), which flows into southern San Francisco Bay.
Natural Reserve SystemI've developed a fair bit of scripts to automatically crunch things using 'Birdnet', as per:
GitHub - kahst/BirdNET-Analyzer: BirdNET analyzer for scientific audio data processing.
BirdNET analyzer for scientific audio data processing. - kahst/BirdNET-Analyzer
GitHubI can certainly facilitate dialogue with the Cornell Ornithology lab if you do not have those connections already.
My own background is in remote sensing (SAR, etc) and currently working in machine learning (albeit for health care currently..) this project sounds fascinating!
Are you already working with Audubon, and/or people in the UC System?
10 December 2022 6:22am
I'll also note that I'm planning to work with a few parks in the DRC/Congo basin to deploy Audiomoths alongside their camera traps.
13 January 2023 12:24pm
Dear Antonio,
It is a long-shot, but this may be relevant to what you are looking for? I have collected across 4 seasons (2022) 8-10 days/season acoustic data from 11 stations located at pine forests of different post-fire regeneration stage (>20 years since last burn, burnt in 2001, 2009, 2018) in Greece. These are typical Mediterranean forest pine landscapes - but certainly not in California or South Africa. We did not have plans at present to continue collecting data - since we got all seasons of one year, but may be the existing data or future data from these or similar areas here in Greece would be relevant to what you wish to accomplish with the airborne measurements?
Feel free to drop me a line.
All the best,
Christos
New Paper - The sound of the illegal: Applying bioacoustics for long-term monitoring of illegal cattle in protected areas
12 January 2023 5:20pm
This study uses passive acoustic monitoring to record the patterns of illegal cattle occurrence within protected areas in the Brazilian Pantanal.
WEBINAR: Earth, Wind & Fire: Amphibian Response to Wildfires, Windfarms, & More
11 January 2023 5:59pm
Conservation Technology Intern (Vietnam)
11 January 2023 5:00pm
Education Paper on Computer Vision for Ecology
9 January 2023 5:30am
Job: Conservation Technology Specialist (PT)
6 January 2023 12:49am
Job: maker / workshop technician
5 January 2023 10:53am
San Diego Zoo needs Summer Undergraduates!!
19 December 2022 1:58pm
Upcoming PAM & R Ocean Science Courses
16 December 2022 3:27pm
PhD - Sensory ecology of vespine wasps
8 December 2022 12:47pm
New paper - First population estimates of two Critically Endangered frogs from an isolated forest plateau in Madagascar
28 November 2022 4:19pm
Acoustic survey data is used to estimate the diversity of critically endangered amphibians in the fragmented forests of Madagascar.
Unifying acoustic metadata
2 November 2022 10:21am
3 November 2022 12:34pm
Hi Ellie - OK sure thing - I can set up an article too.
4 November 2022 3:47pm
Hi Jamie, this is super exciting! I had not realized that PAMGuard integration was going to be part of the plan for Tethys - so thrilling!
One quick question - when processing large datasets, often I end up with a series of binary/database files (e.g., separate runs for separate frequency bands). Does Tethys accommodate the multiple file scenario?
Would love to give it a whirl when appropriate.
7 November 2022 12:32pm
Yeah, it's an exciting project. Also will be a great excuse to improve PAMGuard documentation - something sorely needed. Python libraries also on the way as part of this.
As for Tethys, yes it will accommodate the multiple configuration file scenario - ideally the end game will be that any configuration you use in PAMGuard will be directly exportable to a Tethys database. If you use multiple configurations, then each is a separate Tethys database, however, when these are exported they can be amalgamated into one because the Tethys is clever enough to know these are the same data processed in different ways.
"Would love to give it a whirl when appropriate. " - might be a while but noted! :-)
28 January 2023 5:40am
I'd also add that if the boards are just dirty or dusty, you can just remove all batteries, then wash with a toothbrush and water. Air dry (or use compressed air which speeds things up greatly) and then spot clean areas that need solvent with isopropanol as Harold mentioned. Also if you don't have access to conformal coating, you can also use a non-conductive clear lacquer. The conformal coating covers all the components and prevents short circuits due to conductive water (ie: salt water) or other contaminants. However if you do use a conformal coating, make sure all cables are connected first and the device is in the exact state that it will be deployed in. Also don't conformal coat the battery connectors since you'll want to change out batteries periodically.