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 am the executive director of FishEye Collaborative, a non-profit leveraging emergent underwater listening technologies to grow our understanding of marine ecosystems. I am also the president of FishEye Acoustics, a marine tech company developing a new class of acoustic sensors.
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- @YvanSG
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Clemson University
Seabird ecologist at Clemson University, South Carolina Cooperative Fish and Wildlife Research Unit. Co-chair of Caribbean Seabird Working Group.
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I am biologist, I have studied wild life and ethnobiology at Amazon and caimans in Brazil
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Wildlife Acoustics
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- @AnnabelL
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- @tutgut5
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Michigan Natural Features Inventory (MNFI)
Wildlife ecologist
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Researcher at Forest Research Institute Baden-Wuerttemberg, Passive acoustic monitoring of woodcock
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Petnerup
Animal tech startup founder
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Zoological Society London (ZSL)
Monitoring & Technology Lead, Conservation & Policy, ZSL
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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
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Recently updated products
Description | Activity | Replies | Groups | Updated |
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Hi everyone, I am currently working on the vocal repertoire of an Amazon turtle species and would appreciate if someone would be open... |
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Acoustics | 2 months 2 weeks ago | |
Thank you so much for your encouraging words! I'm thrilled to hear that you enjoyed our conversation, and I truly appreciate your support in spreading the word about my survey... |
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Acoustics, AI for Conservation | 2 months 3 weeks ago | |
I heard it through industry chatter but can't find a news release on it yet. |
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Acoustics | 2 months 3 weeks ago | |
Hi everyone,I posted this mystery recording to Twitter already, but perhaps this forum will have more ideas... Over the years, my lab... |
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Acoustics | 2 months 3 weeks ago | |
Hi Danilo. you seem very passionate about this initiative which is a good start.It is an interesting coincidence that I am starting another project for the coral reefs in the... |
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Acoustics, AI for Conservation, Biologging, Camera Traps, Citizen Science, Climate Change, Community Base, Connectivity, Drones, Emerging Tech, Human-Wildlife Conflict, Open Source Solutions, Sensors, Software and Mobile Apps, Wildlife Crime | 3 months 2 weeks ago | |
Hi Teresa, Thanks for your interest in Arbimon! The platform has a couple different analysis tools that range from unsupervised (like audio event detection & clustering,... |
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Acoustics | 3 months 3 weeks ago | |
Hi Francesca! Did you managed this problem somehow? Can you post the workflow or the solution that worked for you? |
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Acoustics | 3 months 3 weeks ago | |
Real nice video. I'll have another look in the weekend in detail. |
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Acoustics, Community Base, Protected Area Management Tools, Remote Sensing & GIS, Sensors | 3 months 3 weeks ago | |
When it comes to long-range communication in the jungle, it can be challenging due to the dense vegetation that can obstruct radio waves.... |
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Acoustics, Connectivity | 3 months 4 weeks ago | |
I would recommend going with Ubiquity 2.4Ghz devices which have performed relatively well in dense foliage of the California Redwood forests. It took a lot of tweaking to... |
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Acoustics, AI for Conservation, Connectivity, Open Source Solutions | 3 months 4 weeks ago | |
Thank you @carlybatist |
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Acoustics | 3 months 4 weeks ago | |
Let me introduce my Citibats Cambodia project (inaturalist.org/projects/citibats-cambodia) hosted on iNaturalist. At the moment we have... |
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Acoustics | 3 months 4 weeks ago |
Marine Mammals Research Association (DMAD) and ACCOBAMS Joint Training Course
4 May 2023 1:00pm
Soundscape analysis using eco‑acoustic indices for the birdsbiodiversity assessment in urban parks (case study: IsfahanCity, Iran)
2 May 2023 11:52pm
[Recordings Now Available!) EarthRanger User Conference
27 April 2023 5:52am
Software for marine acoustic monitoring?
25 April 2023 11:53pm
Congo Basin activity?
30 March 2023 9:14pm
HydroMoth GroupGets Campaign is Open
17 April 2023 8:44pm
How do I get started with Bird Audio processing and classification?
17 April 2023 9:11am
World Oceans Passive Acoustic Monitoring Day
14 April 2023 4:36am
Project Manager, Rainforest Connection (RFCx)
12 April 2023 1:09pm
The 59th Annual Meeting of Illinois Chapter of The Wildlife Society
12 April 2023 5:24am
Accessible acoustic analysis tech for blind scientist - ideas?
31 March 2023 10:52pm
6 April 2023 10:49pm
Hey Kate I don't have any explicit ideas at the moment but will think on it - such a cool concept! I wonder if there's some form of tactile spectrogram that you could develop, or a way that you could have them try to draw a representation (so assign some shape) of what they are hearing as a means of classification a call and then clustering those shapes? There's a way of creating an image using foam and paper I believe so they could have a tactile record of those shapes. Guess it depends what you want to the quantitative results to be. Super cool that you are looking for greater accessibility in acoustics!!!
7 April 2023 1:40am
Hi Kate,
We've developed a screen-reader workflow for a classification problem on our "Ocean Voices" Zooniverse project, which simply asks folks to label sounds based on what they hear and omits the spectrogram altogether. There are lots of screen-reader users who are active in the Zooniverse Talk forums, so they may have valuable input for you as well.
Once a person has labeled data, I wonder if they could run automated detectors over the data in Pamguard, calculate features (using something like the R package PAMpal), and then use the BrailleR package to explore the statistics in R. This article has a pretty interesting summary about statistical software for visually impaired folks - might not be news to your student, but I thought it was pretty cool.
I'm very curious what our friends who are visually impaired might notice in the acoustic data. Best of luck to you and your student!
Cheers,
Anne
7 April 2023 5:11pm
Hi Kate- ARISTA Lab (Advanced Research in Inclusion & STEAM Accessibility) is actively working on this through their eclispse soundscape project. I recommend reaching out to MaryKay to get the latest on their project.
Megan
Who's going to ESA in Portland this year?
31 March 2023 9:27am
4 April 2023 9:58am
That sounds great. I think you should encourage people to bring a bit of tech with them, can be a good conversation starter/ice-breaker
4 April 2023 4:04pm
Good idea! I've got a ransom assortment of different acoustic recorders I can bring along
5 April 2023 11:58pm
Indeed, I'll be there too! I like to meet new conservation friends with morning runs, so I will likely organize a couple of runs, maybe one right near the conference, and one somewhere in a nearby park where we can look for wildlife. The latter would probably be at an obscenely early hour, so we can drive somewhere, ideally see elk (there are elk within 25 minutes of Portland!), and still get back in time for the morning sessions.
Updates about Arbimon for Ecoacoustics - free, cloud based analytical tool
31 March 2023 11:09am
31 March 2023 3:43pm
Yes please reach out with any questions on acoustic monitoring, Arbimon, RFCx, etc.!
The WILDLABS Variety Hour: March 2023 - YouTube
30 March 2023 4:04pm
If you missed our Variety Hour show yesterday, do not fear! It's already live on youtube for your viewing pleasure. Enjoy!
Global shortage of Raspberry Pis - What are the alternatives
3 November 2022 10:27am
28 March 2023 9:37pm
Have you considered Arduinos?
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
In this radio episode, we speak to Alex Rogers, Professor of Computer Science at the University of Oxford. We discuss how Alex's research team developed the acoustic recording device AudioMoth, how low-cost technologies can democratise biodiversity monitoring, and how sensing technologies can lead to certain species and environments being monitored more than others.
Interviewers: Max Ritts and Michelle Westerlaken
Producer: Harry Murdoch
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:
@KitzesLab Did you try comparing different SD card sizes to check if that influenced battery life?
— Lucille Chapuis (@sharkslikejazz) February 26, 2023
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
25 April 2023 5:08pm
greetings!
i sent you a PM regarding this, feel free to contact me however is most convenient for you -
regards,
chris