Alex Rogers

GitHub - Digital-Naturalism-Laboratories/Mothbox: Developing an open source,low cost automated system for Moth-Lighting photography Developing an open source,low cost automated system for Moth-Lighting photography - GitHub - Digital-Naturalism-Laboratories/Mothbox: Developing an open source,low cost automated system for Moth-L...

Our github Repo for the Mothbox is getting pretty big: github.com/Digital-Natu...

it has the Hardware, Firmware, Documentation Website, and Post Processing Software all on there.

This is nice for us as i can send a single pointer to folks about the Mothbox. But should i organize it different?

This one is 30 seconds of bird song played back at each test location using the standard @openacousticdevices.info AudioMoth firmware with GPS synchronisation. This one has a couple of test points with additional background noise (a real bird).

Yes, once you have a position estimate you can mix the individual recordings together with the correct offset to improve the signal to noise ratio. Lots more uncertainty when the AudioMoths don't surround the sound source.

You can definitely put the AudioMoth in a row and do the same calculation. You get long drawn out position estimates as the angular estimate is good but the range is more uncertain.

Yes, keep forgetting to add the hashtag.

Yes, keep forgetting to add the hashtag.

We’re building some software tools to try to automate a lot of the processing and image generation.

Depends on the accuracy required really. We use two RTK GPS receivers which give relative positions within a few centimetres. Regular GPS is probably a few metres. Picking locations from Google Earth works pretty well. Can also measure distances between all points and calculate locations.

More @openacousticdevices.info AudioMoth-GPS-Sync experiments to visualise the sound sources within recordings.

day 2 saw the completion of the alex’s audiomoth instalment, with 72 both near and away from beaver wetlands and control ponds, recording birds and bats mostly!

also featuring a moose salt lick and a jump in the lake after some hard work

Screenshot showing the terminal during a session using the AudioMoth Altair 8800 simulator running Altair Disk Extended BASIC.

Added floppy disk and line printer simulation to the AudioMoth Altair 8800 simulator (along with 64KB of RAM) in order to run Altair Disk Extended BASIC. This was the last version before the switch to CP/M. github.com/AlexRogersCS...

Screenshot showing an ASCII Mandelbrot set and BASIC program running on an AudioMoth.

Nostalgia for ASCII Mandelbrot set plots. This is an Altair BASIC 2.0 program from @devilishdesign.bsky.social running on an @openacousticdevices.info AudioMoth emulating an Altair 8800. github.com/AlexRogersCS...

Photograph of an AudioMoth 1.2.0 acoustic recorder against a white background.

AudioMoth 1.2.0 devices are back in stock at @groupgets.bsky.social. groupgets.com/products/aud...

Screenshot of the AudioMoth Altair 8800 simulator running an example BASIC program.

A photo of an AudioMoth USB Microphone that is running the AudioMoth Altair 8800 simulator.

The first commercial release of Altair BASIC (Version 2.0) came out fifty years ago (1st July 1975). Amazingly, a paper tape copy has just resurfaced @devilishdesign.bsky.social. It runs perfectly on my AudioMoth Altair 8800 simulator. github.com/AlexRogersCS...

Going through some old paper tapes and found this. It's version 2 of Microsoft BASIC from 1975. Version 1 was never released to the public which makes this Microsoft's first commercial product and it's not been archived anywhere! Time to break out my tape reader... 🙂

Acoustic monitoring fieldwork in the Scottish Highlands Ella Browning and Emily Warner We have just completed two weeks of successful data collection in Caledonian pinewood in the Scottish Highlands. Using passive acoustic monitoring to survey bats and bir...

Our researchers have just returned from fieldwork in #Scotland, where they are using passive acoustic monitoring to survey bats & birds, & trialling a method for assessing invertebrates. @emilywarner.bsky.social & @ellabrowning.bsky.social's passion for their research comes across in this blog.

Audiomoth

Stage - analyse audiodata verzameld met behulp van passieve akoestische monitoring. Meer informatie vind je op onze website: www.sovon.nl/stage-analys...

Spectrogram showing echolocation calls of Common Pipistrelle

Spectrogram showing echolocation calls of Soprano Pipistrelle

Helping record wildlife at our animal care unit at @srucnews.bsky.social Aberdeen campus this week. The two pipistrelles recorded during a night of @openacousticdevices.info #AudioMoth monitoring.

Lots of mature trees and grassland here, so hopefully more bat species to add...
#mammal #bioacoustics

Any kind of underwater sound recording equipment is good. An Aquarian H2a, HydroMoth, or GoPro Hero are popular options. Recording in a field tank is best, individual clips from soundscape recordings are OK if you can have a good guess at the family level.

See fishsounds.net/freshwater.js

Depends on your application. They are noisier than many recorders but more flexible. They are intended for biodiversity monitoring where the quality of recordings is less of a priority. Higher quality and more expensive recorders are available.

Software | openacousticdevices

The AudioMoth and AudioMoth USB Microphone will record to 384 kHz. You can plug in external hydrophones that use plug-in-power, such as the Aquarian H2dM, and use AudioMoth-Live on a laptop to view and record. www.openacousticdevices.info/live

Field team in Wytham Woods May 2025

Image of the new Biology Building, completed, and opening from August 2025

Lunch with the field team to celebrate another successful season - May 2025

Interested in Postdoc Research here in Oxford? Many projects possible using long-term population studies of birds, field & lab experiments with insect consumers, phenology of trees all in Wytham woods & based in new Biology building
marie-sklodowska-curie-actions.ec.europa.eu/calls/msca-p...

Hand holding an Audio Moth - this is a green device the size of a palm. It has various components including a USB port, side-mounted switch, LEDs etc

An audio moth in a small bag suspended outdoors on a bamboo pole. The device has been labeled as number 8

A bamboo pole being installed in the meadow grasses in front of Royal Holloway’s Founder’s Building

An audio moth stored on a bamboo pole in the middle of an area with small trees

I spent my morning with colleagues in Biological Sciences installing AudioMoth detectors across the @royalholloway.bsky.social woodland. Over the next weeks these devices will be monitoring the impact of lighting levels on bat distribution 🦇

15 years in the planning, New Forest Cicada is back and in a captive breeding programme at Paulton's Park. Huge thanks to all the project partners and @naturalengland.bsky.social for their support. A significant first step in a long journey...

www.bbc.co.uk/news/article...
AudioMoth's humble beginnings involved a search for the New Forest Cicada. Great news to see the story coming full circle and the species returning to the UK.

The tool was developed by utilising huge, diverse acoustic datasets - including data from our team out in Miami for my PhD, where it proved very effective at detecting motorboat noise from AudioMoth recordings 🚤🦈🪸

Audiomoth recording! 🦇

As expected, common pips were out and about last night! Going to try recording in different parts of the garden to see if I get any other species.

Audio Spectrogram Transformers Beyond the Lab A recipe for building a portable soundscape monitoring app with AudioMoth, Raspberry Pi, and a decent dose of deep learning. The post Audio Spectrogram Transformers Beyond the Lab appeared first on Towards Data Science .

Interest | Match | Feed

We had a fantastic day in the Canadian sunshine yesterday deploying @openacousticdevices.info HydroMoths in Lac Hertel, Quebec.

There’s still a lot to learn about diel & seasonal trends in freshwater soundscapes… watch this space!

A photograph of a custom piezoelectric transducer sensor and a SM-24 geophone in a yellow commercial housing with a soil spike, sitting on a patterned workbench.

If you are interested in connecting other signal sources to AudioMoth, such as piezoelectric hydrophones and contact microphones, or geophones, check out our new application note - github.com/OpenAcoustic...