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John Martinsson

@johnmartinsson.org
2K followers 974 following 28 posts

I study machine listening methods for bioacoustics and automated sensing of natural environments. And I enjoy natural environments. johnmartinsson.org Core member of Climate AI Nordics | ML researcher at RISE

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Reposted by John Martinsson
Climate AI Nordics @climateainordics.com · 13/05/2026
🌍 CAIN × CCAI: Stronger together across scales. Regional collaboration and global action, accelerating ML for the planet with joint initiatives, knowledge exchange, and capacity building. One goal, two networks, meaningful impact. ⚡️ @climatechangeai.bsky.social climateainordics.com/news/2026-05...
climateainordics.com
New Strategic Partnership: Climate AI Nordics and Climate Change AI
Scaling Global Climate Action: Climate AI Nordics Partners Up with Climate Change AI
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John Martinsson @johnmartinsson.org · 29/04/2026
Micing up the Auk Lab at Stora Karlsö in the Baltic Sea for the second year in a row. The auks have arrived! 🔊 #bioacoustics auklab-audio.github.io
A common Murre (Guillemot) sitting at one of the ledges of the Auk Lab looking out over the Baltic Sea durinf sunset.
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Earth Species Project (ESP) @earthspecies.bsky.social · 17/12/2025
🐦‍⬛ New paper in Animal Cognition covering our carrion crow project with partners at @Univeristy of Leon. 52 mini-biologgers were deployed on wild carrion crows in Spain — capturing 127K+ vocalizations. 🔗: www.earthspecies.org/blog/unlocki... (1/4)
earthspecies.org
Unlocking Avian Secrets: How Tiny Biologgers Are Revealing the Hidden Communication of Carrion Crows - Earth Species Project
Lightweight biologgers and ESP's machine learning tools reveal the hidden vocal world of wild carrion crows, capturing over 127,000 calls from quiet murmurs to long-distance signals.
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Dan Stowell @danstowell.mastodon.social.ap.brid.gy · 27/11/2025
I was really pleased to be at the "Climate AI Nordics" workshop. Here's my talk, putting our AI-for-nature together with climate footprint questions: "Bioacoustic AI for nature: how can it tread lightly?" www.youtube.com/watch?v=8gcpKav1xBg #ai4good #aifornature #bioacoustics
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Climate AI Nordics @climateainordics.com · 28/11/2025
Our November newsletter is out! Read about Klimatkollen securing new collaboration project through CAIN! Plus: our new YouTube channel, where and when to meet us at EurIPS, and the latest jobs. climateainordics.com/newsletter/2...
climateainordics.com
Climate AI Nordics Newsletter, November 2025
Welcome to the November edition of the Climate AI Nordics Newsletter!This month, we are celebrating a major milestone that highlights the true power of this community. Our partner Klimatkollen has sec...
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Signal @signal.org · 03/10/2025
We are alarmed by reports that Germany is on the verge of a catastrophic about-face, reversing its longstanding and principled opposition to the EU’s Chat Control proposal which, if passed, could spell the end of the right to privacy in Europe. signal.org/blog/pdfs/ge...
signal.org
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Dan Stowell @danstowell.mastodon.social.ap.brid.gy · 03/10/2025
BioDCASE workshop - registration closes next week Oct 10th biodcase.github.io/workshop2025 - Hope to see you there! #bioacoustics
biodcase.github.io
BioDCASE Workshop - BioDCASE
Join us for the BioDCASE Workshop held in Barcelona, Spain on the 29th of October! The workshop will be held at the Campus del Poblenou of Universitat Pompeu Fabra. The BioDCASE workshop will be hosted the day before the DCASE workshop on the 30-31st of October at the same venue …
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Climate AI Nordics @climateainordics.com · 19/09/2025
🌍 Excited to announce our Workshop on AI for Climate & Conservation (AICC) at #EurIPS2025 in Copenhagen! 🎉 📢 Call for Participation: sites.google.com/g.harvard.ed... Confirmed speakers from Mistral AI, DeepMind, ETH Zurich, LSCE & more. Looking forward to meeting and discussing in Copenhagen!
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John Martinsson @johnmartinsson.org · 29/09/2025
Our paper, “The Accuracy Cost of Weakness: A Theoretical Analysis of Fixed-Segment Weak Labeling for Events in Time”, is now out in TMLR! It explores tradeoffs in weak labeling for sound events and gives a theoretical basis for adaptive approaches. 📄 Read: johnmartinsson.org/publications...
johnmartinsson.org
The Accuracy Cost of Weakness: A Theoretical Analysis of Fixed-Segment Weak Labeling for Events in Time
This paper analyzes the accuracy and cost of fixed-length segment weak labeling for events in time, comparing it to an oracle method and providing justification for adaptive weak labeling strategies.
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Oisin Mac Aodha @oisinmacaodha.bsky.social · 19/09/2025
Working at the intersection of AI and Climate/Conservation? If so, check out our upcoming workshop which will taking place at #EurIPS in Copenhagen in December 2025. sites.google.com/g.harvard.ed... @euripsconf.bsky.social ‬
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Dan Stowell @danstowell.mastodon.social.ap.brid.gy · 10/07/2025
I'm happy to announce two excellent keynote speakers for BioDCASE 2025! AND registration is open too! All the details are here: biodcase.github.io/workshop2025 #BioDCASE #DCASE #bioacoustics #PAM
Logo: BioDCASE workshop, 8th October, Barcelona
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John Martinsson @johnmartinsson.org · 18/06/2025
Very exited about this! To start with we are looking to find and label some of their vocalizations to build a vocabulary, and to link them to video events. Many very interesting audio-visual modelling challenges! I would like to build an audio-visual vocabulary to help understand their behaviour.
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John Martinsson @johnmartinsson.org · 12/06/2025
Sounds great! If you have a link to the PhD please send it. I'd be happy to have a look :)
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John Martinsson @johnmartinsson.org · 11/06/2025
Happy to! Are you studying auk acoustics as part of your post-doc, or what is your relationship to these birds? :)
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Annamaria Mesaros @annamariamesaros.bsky.social · 02/06/2025
The DCASE 2025 Challenge enters the evaluation phase. Two weeks to the deadline!
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John Martinsson @johnmartinsson.org · 10/06/2025
The webpage is under development. Hopfully the playable Guillemot icons will have diffetent sounds soon that we collect during the season.
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John Martinsson @johnmartinsson.org · 10/06/2025
Small webpage for an ongoing #bioacoustic monitoring project I am part of at Stora Karlsö: auklab-audio.github.io Adding #audio will hopefully let us learn more about the life of the Guillemots. What are they saying? Lesson learned: designing a recording setup is a challenge and lots of fun! 🔊
auklab-audio.github.io
Auklab Audio Research
News and updates about the continuous acoustic monitoring at the Auk Lab
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Climate AI Nordics @climateainordics.com · 15/05/2025
Big thanks to all speakers and participants who joined the first Nordic Workshop on AI for Climate Change in Gothenburg, a great success! 🌍💡 Next year’s workshop is already set: June 26, 2026 in Copenhagen 🇩🇰, hosted by our core team at KU & the Pioneer Centre for AI. Let's keep up the momentum! ⚡️
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Marine Mammal Research at Aarhus University, Ecoscience @marinemammalsau.bsky.social · 29/04/2025
Noise pollution isn’t just an inconvenience! 🔉🐬 it can disturb entire marine ecosystems. Understanding how noise disturbance affects wildlife populations requires powerful models, lots of data and a dedicated team. See the thread for what is going on in AU Ecoscience #marinemammalresearch 🌊
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John Martinsson @johnmartinsson.org · 24/04/2025
Read more about the already established monitoring setup here: www.balticseabird.com/auklab/, thanks Jonas Hentati Sundberg for making this happen!
balticseabird.com
AukLab – BSP
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John Martinsson @johnmartinsson.org · 24/04/2025
For years I've had a long-term personal goal to have a project in my work that requires me to do fieldwork. Early this year I achieved that goal. And this weekend I will go to Stora Karlsö and install microphones in a Guillemot colony with my collegues @mogren.ml @delialia.bsky.social. 🐧
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danstowell.bsky.social @danstowell.bsky.social · 02/04/2025
Just launched: the BioDCASE challenge! Monitor whales, birds and other animals, through their sounds? We're publishing new datasets, and new evaluations, to help you do so! Please join this new challenge, and please spread the word: biodcase.github.io #bioacoustics #machinelistening #ai4good
Logo: BioDCASE. Challenge launched! We like birds, whales, forests, and data
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Climate AI Nordics @climateainordics.com · 02/04/2025
Climate AI Nordics hits 140 members! 🎉 Using AI for climate resilience. Join our 🇩🇰🇫🇮🇳🇴🇸🇪 network, especially if you're in Iceland 🇮🇸, Faroe Island 🇫🇴, Greenland 🇬🇱 or Åland 🇦🇽! Let's build solutions. Sign up: climateainordics.com/join/ #ClimateAI
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Stephen Curry @scurry.bsky.social · 03/03/2025
I will close the letter for signatures at 17:00 today (UK time). Last chance to voice your support before this evening's meeting of the Royal Society.
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John Martinsson @johnmartinsson.org · 14/02/2025
Part of micing up a Guillemot colony in the Baltic Sea (www.balticseabird.com/auklab/). Switches with ethernet and power within 5 meters of all mics. Dynamic range important. Any tips on hardware (e.g multi channel ADC rack and mics, IP audio) and things to consider are welcome! #bioacoustics
balticseabird.com
AukLab – BSP
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John Martinsson @johnmartinsson.org · 05/02/2025
Happy to be part of the core team for Climate AI Nordics!
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Climate AI Nordics @climateainordics.com · 09/01/2025
Advancing biodiversity monitoring is crucial for meeting the EU Biodiversity Strategy targets and addressing gaps in current ecological assessments. However, collecting data to monitor the state of biodiversity is time and resource con... #ccai >>Read more!<<
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John Martinsson @johnmartinsson.org · 01/01/2025
Thank you for writing this book. I study machine listening methods for bioacoustics. Books like this help me understand the variety of animal sounds, which lead to development of more useful methods. And reading about sound and animals is always enjoyable. Look forward to reading it!
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Nicolas Mathevon @nicolasmathevon.bsky.social · 30/12/2024
The paperback edition of "The Voices of Nature. How and Why Animals Communicate" is announced! press.princeton.edu/books/paperb...
press.princeton.edu
The Voices of Nature
Songs, barks, roars, hoots, squeals, and growls: exploring the mysteries of how animals communicate by sound
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Climate AI Nordics @climateainordics.com · 20/12/2024
Newsletter: Welcome to the Climate Change AI Nordics Newsletter, December 2024! Read about recent and coming seminars, workshops, and the modelling of thermal inequalities in African cities. #ccai >>Read more!<<
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John Martinsson @johnmartinsson.org · 19/12/2024
Just remembered that Nilo Recalde had an excellent talk about annotation/validation of thousands of audio clips at BioacousTalks: www.youtube.com/watch?v=n0fr..., maybe his software "pykanto" is worth looking at: nilomr.github.io#software. Depends on how much programming you are willing to do!
youtube.com
BioacousTalks: Small Bird, Big Data, Deep Learnings with Nilo Recalde
YouTube video by K. Lisa Yang Center for Conservation Bioacoustics
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John Martinsson @johnmartinsson.org · 19/12/2024
Yeah, I agree that it is not really built for large annotation projects in that sense. If you find what you are looking for, please write what you find in this thread! I'm also curious 😊
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John Martinsson @johnmartinsson.org · 18/12/2024
Might be worth looking into Santiago's work: github.com/mbsantiago/w..., otherwise Raven Lite/Pro is nice. Not sure if it has all the features you are asking for.
github.com
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Callan Alexander @callanalexander.bsky.social · 07/12/2024
Finally joined BlueSky! I'm a PhD candidate mostly working on #bioacoustics, #machinelearning & #conservation. This black squiggle (a spectrogram) may not seem like much, but it’s the first Eastern Bristlebird heard in QLD in 5+ years found using acoustic recorders + a deep learning model.
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John Martinsson @johnmartinsson.org · 10/12/2024
I've just launched my new webpage, johnmartinsson.org, where I share my research on machine listening for bioacoustics and ecosystem monitoring. Especially happy about the little clickable animal icons in the top. Click on a few to make a soundscape! #Bioacoustics #MachineLearning #MachineListening
From left to right: a black and white image with a bird, fox and frog and a question mark above, an icon of a microphone and a camera, illustration of machine listening and computer vision applied on the sensor data, and finally an image of a bird, fox and frog but with color. Indicating that the species have been automatically detected.
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John Martinsson @johnmartinsson.org · 08/12/2024
Counting individuals is a hard problem, and still an open research question. What is needed is a model of vocalization frequency for each species, to turn a pure species vocalization count into a count of individuals. Or a model that actually distinguish individuals (not aware of any currently).
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John Martinsson @johnmartinsson.org · 08/12/2024
Sounds very interesting! Do you know which species to expect beforehand? I would say that creating a spectrogram that shows some species should be rather feasible. Especially birds using e.g. BirdNET or BirdAVES, and some programming to process predictions and visualize results.
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John Martinsson @johnmartinsson.org · 08/12/2024
Hi! Thanks for reaching out. Sounds like a fun project. What are you aiming to detect in the gardens?
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Climate AI Nordics @climateainordics.com · 04/12/2024
30 people are now registered for the 2025 Nordic Workshop on AI for Tackling Climate Change! First 65 participants register for free! Check out the program: ccainordics.com/events/2025-... ! @oisinmacaodha.bsky.social @aleksispi.bsky.social @johnmartinsson.bsky.social @nicolang.bsky.social #ccai
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John Martinsson @johnmartinsson.org · 03/12/2024
#bioacoustics #audioml #conservationtech
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John Martinsson @johnmartinsson.org · 03/12/2024
For anyone fascinated by technology, sound, and life itself, I highly recommend The Sounds of Life by the late Karen Bakker. This book explores how technology is unveiling the hidden sonic worlds of animals, transforming our understanding of nature’s communication.
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John Martinsson @johnmartinsson.org · 03/12/2024
Thanks! I did not realize that 🙂
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John Martinsson @johnmartinsson.org · 02/12/2024
I've mainly been working with terrestrial soundscapes so far. But I'm thinking about it. Would be nice to evaluate some methods on marine sounds as well. Are you working with marine soundscapes?
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Aleksis Pirinen @aleksispi.bsky.social · 02/12/2024
Attending NeurIPS next week? Drop by by our poster for the paper "GOMAA-Geo: GOal Modality Agnostic Active Geo-localization"! Go to East Exhibit Hall A-C #1403 on Dec 11th 4:30pm, where Anindya Sarkar (WashU) will present our work. Paper: arxiv.org/abs/2406.019... Code: github.com/mvrl/GOMAA-Geo
arxiv.org
GOMAA-Geo: GOal Modality Agnostic Active Geo-localization
We consider the task of active geo-localization (AGL) in which an agent uses a sequence of visual cues observed during aerial navigation to find a target specified through multiple possible modalities...
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John Martinsson @johnmartinsson.org · 02/12/2024
I'd love to be added! I'm a PhD student working on machine learning for audio analysis. Thanks for making this pack!
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Yann LeCun @yann-lecun.bsky.social · 29/11/2024
Another thing to be thankful for: the use of AI to help improve climate change models. From The Economist: www.economist.com/science-and-... Free access on archive.org: archive.is/N9uaF
economist.com
Artificial intelligence is helping improve climate models
More accurate predictions will lead to better policy-making
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Dan Stowell @danstowell.mastodon.social.ap.brid.gy · 13/11/2024
News about our work! "A birdsong AI joins the world's biggest bird sound forum" - It's true! www.naturalis.nl/en/follow-our-stor… #bioacoustics #AI #machinelistening #xenocanto
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Tessa Rhinehart @tessarhinehart.bsky.social · 30/11/2024
Searching for #bioacoustics tools to classify species, organize data, triangulate sounds, ...? 🦉🐋🦇🦗 Check out the (newly updated) Bioacoustics Software Database! rhine3.github.io/bioacoustics...
rhine3.github.io
Bioacoustics Software Database
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David G Haskell @dghaskell.bsky.social · 16/11/2024
Take your ears and imagination on a journey with me into the sonic riches and brokenness of our world. Music, nature, listening. A Pulitzer and PEN finalist. Now out in paperback. 🦜💚🎵🐸🎻🏙️⚖️
Cover of the book, Sounds Wild and Broken, an image in three layers: humpback whales at the bottom, then treefrogs, then an American robin singing against a background of the mountains.
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Vincent Lostanlen @lostanlen.bsky.social · 17/11/2024
meet the PhD students i'm advising Matthieu Carreau Xiran Zhang Orian Sharoni Yuexuan Kong Yasmine Benhamadi Han Han Reyhaneh Abbasi (visiting) picture taken earlier this month in front of Ircam 📸 Mathieu Lagrange our team website: audio.ls2n.fr
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