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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I'm a PhD student from India, interested in utilising bioacoustics and technology to answer ecological questions. I'm a frog nerd :)
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Careers
Join the San Diego Zoo Wildlife Alliance as a Postdoctoral Fellow! Lead groundbreaking bioacoustic and ML research to conserve burrowing owls in SoCal.
26 November 2024
Link
AmazonTEC: 4D Technology for Biodiversity Monitoring in the Amazon (English)
Elsa Carla De Grandi
Interesting webinar on the use of advanced technologies(e.g. Artificial Intelligence, cloud computing, drones, camera traps and satellites) for biodiversity monitoring in the Amazon. Also available in Spanish.
25 November 2024
Careers
Arctic Acoustic Technician
Alex Rood
WCS iseeking candidates for an acoustic technician position to support the Western Arctic Program’s ongoing work using passive acoustic monitoring to study marine mammals, fish, and underwater noise in the Canadian...
19 November 2024
Careers
1 year research role working on the FrogID citizen science project
13 November 2024
Article
Apply Now: AI for Conservation Office Hours 2025
Jake Burton and 1 more
Are you stuck on an AI or ML challenge in your conservation work? Apply now for the chance to receive tailored expert advice from data scientists! The deadline for applications is Monday 9 December 2024.
13 November 2024
Careers
The San Diego Zoo Wildlife Alliance Conservation Technology Lab seeks a postdoctoral associate for a three-year position applying their machine learning expertise to bioacoustics problems in ecology and conservation.
1 November 2024
Article
You can now pick with or without switch
21 October 2024
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Women and GIS
Szilvia Szilagyi
Empower GIS day, 20th of November 2024 Welcome to join over the globe
9 October 2024
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Very nice video!
7 October 2024
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MS and PhD Opportunities in Ocean Engineering and Oceanography
Camille Pagniello
The Marine Innovation Lab for Leading-edge Oceanography develops hardware and software to expand the ocean observing network and for the sustainable management of natural resources. For Fall 2025, we are actively...
6 October 2024
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Bat Detector for iOS added to Inventory
Phil Atkin
Not really news, but it's worth shouting about!
2 October 2024
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| Description | Activity | Replies | Groups | Updated |
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| Hi cosmicspittle, Many thanks for the pointer, I shall discusss it with our local tech disussion group here tomorrow morning. One of the guy's, the PhD candidate... |
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Acoustics | 4 years 10 months ago | |
| Hi Wildlabbers, We've got a fascinating paper to show you, as shared with us by Claude Miaud. This study looks at how amphibian... |
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Acoustics | 4 years 11 months ago | |
| I thought this article might be interesting to people in this group: "It’s common knowledge that bats navigate and search for... |
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Acoustics | 4 years 11 months ago | |
| Hello to you all, I hope everyone is doing ok during this Covid-19 contingency. Jsut sharing this adaptation for the water proof case for the Audio Moth. https://www.... |
+2
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Acoustics | 5 years ago | |
| Johnnie, Great. You can get me at work on c.abrahams@bakerconsultants.co.uk Ta, Carlos |
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Acoustics | 5 years 1 month ago | |
| Hi everyone, Thanks for attending today's episode! You can find all of the collaborative notes at the link below, and we also encourage you to use this thread to connect... |
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Acoustics | 5 years 1 month ago | |
| Hi everyone, If anyone is looking for the episode's collaborative notes, you can find them here: https://notes.datawrapper.de/p/Tech_Tutors_Episode_3 This doc... |
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Acoustics | 5 years 1 month ago | |
| Hi all, There is a conversation underway in the "Ethics of conservation tech" group on best practices for responsible ue of... |
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Acoustics | 5 years 2 months ago | |
| How do we get notified for the next group buy? |
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Acoustics | 5 years 2 months ago | |
| Hello all, I am new to recording but have been learning about acousting environmental monitoring for several years now. Covid19 has me... |
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Acoustics | 5 years 2 months ago | |
| Hi Isla, Range at which animals hear sounds depend on 4 things: 1) the frequency (pitch) of the sound of interest. As a rule of thumb, lower frequency sounds travel... |
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Acoustics | 5 years 3 months ago | |
| We used the following lithium batteries. URL: https://fortebattery.en.made-in-china.com/product/FBDEubqyfGhH/China-C-Size-Lithium-Batteries-Cr26500-Cr26500se-... |
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Acoustics | 5 years 3 months ago |
The WILDLABS Variety Hour: March 2023 - YouTube
30 March 2023 4:04pm
Global shortage of Raspberry Pis - What are the alternatives
3 November 2022 10:27am
29 March 2023 10:13am
UPDATE: The Banana Pi didnt work out for us as it was not possible to track back all the components and ensure that they were responsibly sourced. The Rock board did work for us and we were able to port our system onto this. We will be rolling out units using this over the summer. It also looks like Raspberry Pis are coming back on line and we were able to secure a bulk order for deliver mid-summer
29 March 2023 10:14am
Yes, but for our needs that are not powerful enough
Exploring storage options for mass data collection
22 March 2023 3:20am
22 March 2023 7:36pm
Hi Adam!
I mostly live within the ecoacoustics space so I'll just speak on the hydrophone part of your request; Arbimon is a free web/cloud-based platform with unlimited storage for audio files. We've got an uploader app as well for mass-uploading lots of files. There's also a bunch of spectrogram visualization/annotation tools and analysis workflows available. It's AWS running under the hood.
I have some experience working directly with AWS & Microsoft Azure, and I've found personally that AWS was more user-friendly and intuitive for the (fairly simplistic) kinds of tasks I've done.
27 March 2023 5:23am
Alex Rogers: Acoustic Devices for Biodiversity Monitoring — Smart Forests Atlas
24 March 2023 12:28pm
Alex Rogers: Acoustic Devices for Biodiversity Monitoring — Smart Forests Atlas
In this radio episode, we speak to Alex Rogers, Professor of Computer Science at the University of Oxford. Interviewers: Max Ritts and Michelle Westerlaken Producer: Harry Murdoch Listen on Apple and Spotify.
Catch up with The Variety Hour: March 2023
23 March 2023 11:09am
Using acoustic monitoring to track infectious disease risk
8 March 2023 1:29pm
Proposals wanted for Innovation in Practice
6 March 2023 10:34pm
USD500 available for your workshop
6 March 2023 1:30pm
AudioMoth and Song Meter Micro battery life tests
16 February 2023 4:09pm
24 February 2023 2:20pm
Hi Justin, looks like the link is not working!
24 February 2023 5:23pm
Should work now - a stray full stop snuck in there!
26 February 2023 2:58pm
Hi Justin,
Dropping in a question you've received over on twitter:
Hi! Nope, this report doesn't test SD card size or any other parameters like read/write speed or brand.
— Tessa Rhinehart (@TessaRhinehart) March 7, 2023
Use of passive acoustic monitoring methods to estimate poaching pressure of European turtle doves in Greece (Ionian Islands)
24 February 2023 12:54pm
The Arbimon newsletter is back!
23 February 2023 11:34pm
New guidance - Good practice for ecoacoustic monitoring
23 February 2023 10:31am
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
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
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.
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
28 March 2023 9:37pm
Have you considered Arduinos?