Hello,

I was testing with the audiomoth USB mic and realized the firmware was delivered as firmware 1.3.0.

(plugged into PC USB port for live reading trough app)

So I updated it to the latest 1.12.1.

After this the mic stopped recording sound using the live app in all modes.

After messing with the config app for a bit i couldnt get it to read the live recording trough the Live app anymore.

Hello,

I have AudioMoth 1.2.0 from Open Acoustic Devices and Kaleidoscope Pro from Wildlife Acoustics. My problem is that I can’t process the files produced by AudioMoth. During batch processing, I always get the same error message saying that no data was found.

I’ve been thinking that the problem might be that the files from AudioMoth are T.WAV files rather than WAV files. The AI—Claude—said that this is the problem, because Kaleidoscope can only handle WAV files.

After that, I tried to convert these T.WAV files into regular WAV files. But that didn't work either.

What could be the problem?

Thanks for your ideas.

I have modified the Play webapp to show a tooltip that shows the frequency, raw time on a T.WAV file and the actual time. Perhaps it is of use to some. Demo version. Source.

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I've been trying to find an easy way to access a connected AudioMoth's device ID/serial number, and it seems the reported serial number visible in system information on a mac, or pulled via Python, is always just 0100 and not the device ID recorded in the config file and displayed in the time/config apps. Is there any plan to surface the device ID as the serial number in this case, or is the only option to use the desktop apps or USB-HID-Tool?

I have got a problem when trying to load a saved config file and sending this to an attached Audiomoth (AM).

With the latest APP version I can create a configuration, program the AM and save the file to disc. When trying to loading this config file into the App again I get an error message, which does not make sense to me, but it prevents me from programming an AM with the content of that file (see attached screenshot). The filter settings were correct when creating the file.

This problem occurs when using version 12.xx of the App. When I use Version 11.1. the problem does not show and everything works as expected. Latest firmware is installed.

Please check and advise how to proceed.

Hello - I have received a bunch of audiomoths. I have put in batteries and cards. The greenlight is on when plugged in to the USB. When I switch to Custom mode it is a solid red light and a flashing green one. But I cannot do anything further. Neither the timing nor the flash nor the config app seems to recognise them as being there, in either Custom or USB/Off mode.

I'm trying to set up my AudioMoth, but it doesn't display the correct time and I can't manually set it. The time now is 17.29, but the app says it's 01:48 UTC +1

I have installed Chime which does show the correct time, but I can't see where to enable Chime in the configuration.

Can someone please advise?

I recently bought 10 audiomoths, and 9 of them work perfectly, but there is one unit that is not able to update to the latest software.

I get an error message, see attached image.

When I tested it using the version of software that it came with (1.10.1), I can configure it, it will record at the right times, but the recordings are faulty (it almost sounds like the soundfiles are backwards).

Is there any options in the AudioMoth Flash App that I can try to reinstall the audiomoth?

Thanks in advance for any advice,

Machteld

Hi Everyone,

to just change battery and SD card in the field I'm trying to use the chime app to setup the time after those change. Yet, it seems that it overwrite the initial config.txt and thus I'm loosing my initial sleep and recording duration. Do you know if there is a way to combine Chime App to setup time and keep parameters of the custom config.txt already on the SD card?

Thanks!

I haven't used my Audiomoth since last autumn and wanted to deploy it again. I'm using the same PC as I used previously except that the operating system is now Windows 11 (previously 10). When I plug in the Audiomoth using the same USB cable I have always used, I get the solid green light but there is no information in the Device ID box in the Configuration App. (New batteries, functioning microSD tested in another device, slider set to USB/OFF). I tried multiple USB ports.

I tried the Flash App which says no Audiomoth found. I then followed the instructions to manually switch to serial flash mode. I got the dual flashing red/green LEDs which turned off when I put a paper clip across the appropriate pins, but no matter how many times I tried this the Audiomoth is not detected.

Please can you provide some advice? Maybe it's…

Would it be possible to modify the Audiomoth firmware to accept a digital I2S audio signal instead of the analog signal from the onboard microphone handled by the internal ADC in the EFM32 chip.

It seems that the limitation in the audio quality of the Audiomoth device is related to either the signal path or the internal analog to digital converter wich is supposed to have 12-bit resolution but has a real resolution of roughly 8-9 bits and quite a bit of noise.

Maybe it would require a whole new firmware? Even if most of the audio settings in the firmware wouldn't work, it would be useful if the scheduling, highpass and lowpass filter, amplitude threshold and such worked.

I found this old R package:

but it seems it hasn't been updated in years.

I want to read header info from the wav file produced by audiomoth recording - does this have start and end battery life, for example? Or can I only read battery voltage when I plug into the Audiomoth configuration app? if these and other data are in the header, how would I go about opening that, preferably in R?

If I'm thinking about this all wrong, can someone point me down the correct path?

I am starting a bird vocalization monitoring project with an Audiomoth, in Los Angeles and I'm looking for assistance with how to do the audio processing on my computer. Can someone help me find the right resources?

Thanks

joe

Hello, I need to create a sunrise/sunset schedule but with an additional recording period around midday. Is that possible? If not, do you plan to implement it? Thank you very much.

Hi,

I tried to install Chime on my mobile and got this:

Is there a newer version available for Android?

Thanks,

Dana

Hi,

Can anyone tell me what i need to change that the moth will start recording immediately without any set time. (only recording period is set once - to limit the filesize) It could name the files like 1.WAV, 2.WAV or so. i dont need a timestamp and the setting of the time only complicates deployment. GPS only needs battery...

The next thing i'd like to know is why this device "looses" its firmware sometimes if the battery is disconnected for some time.

Thanks in advance

Phil

Hi everyone,

when reading the documentation on Github I see that the sampling rate is capped at 192 kHz for use with the dedicated GPS sync FW (https://github.com/OpenAcousticDevices/Application-Notes/blob/master/Using_AudioMoth_GPS_Sync_to_Make_Synchronised_Recordings/Using_AudioMoth_GPS_Sync_to_Make_Synchronised_Recordings.pdf). When I look at the sample SETTINGS.txt (https://github.com/OpenAcousticDevices/Application-Notes/blob/master/Using_AudioMoth_GPS_Sync_to_Make_Synchronised_Recordings/SETTINGS.TXT) provided the parser seem to enforce 125 kHz. I am interested in recording bats and localizing them with synced MicroMoths and I was hoping to use a sampling rate of 384kHz. Is it not possible to sample that high when using the GPS hat?

Best wishes,

Felix

Hello,

When I use the Chime app to start an audiomoth recording, and select GPS in that app, does it save that GPS in the audio metadata?

I have taken to taking a photo and using exif, but if the data is in the wav somewhere that would be ace.

Thanks

Is it possible to modify the firmware so that the data stored on the SD card can be accessed via USB connection, instead of removing the card from AudioMoth and connecting it to a PC with a card reader?

Hello,

Great work. I'm currently using the HydroMoth as well as 2 USB microphones for another project.

Everything is ok.

I wonder how it could be possible to configure the USB microphones using a simple HDI or another USB command.

Indeed, since there is no battery on this board the configuration cannot be permanent and each time the board is unplugged the configuration is lost.

Default configuration, 384 kHz, no filter, average gain is ok in most cases but if I want something special, it's not possible.

Hello, I was able to compile an edge impulse model and used the audiomoth-edgeimpulse repo to flash onto my audiomoth. it does appear to be working, I'm just confused about a few settings and how to interpret the results.

My main question is- Edge Impulse requires at least 2 classes to train an acoustic classifier. I have one class being my bird of interest, and my second class is "background noise" of either other birds in the area or just regular background noise. But I was unable to see where in the audiomoth firmware where you tell it which class to look for and "trigger" to store on. Is it triggering and storing the results for both classes? Or just the first class? I would prefer it to store only the class of interest. Based on the saved wav files im getting, it seems to be storing both, but I…

Hi, I have an AudioMoth and I haven't tried to use it since a year ago or so. It's less than two years old. I can't get it to be recognized by either of my Windows 11 computers. Power to the device occurs but nothing in the device manager. I have tried installing drivers from Silicon Labs to no success. It used to work with my old computer running a much older Windows OS. I'm thinking software got corrupted on the AudioMoth. Multiple cables, multiple computers, multiple drivers. Batteries removed. I give up. I can't see a reset switch anywhere on the AudioMoth device. I get a solid green light on the device so there's power but no life.

Hello, is there a way to record at 24kHz sample rate? I cannot see the option in the AudioMoth config, but I wonder if there is an alternative way to do so?

Thanks a lot!

Rod

Hello, I have been having issues with getting some GPS hats to get a fix.

I have successfully soldered some Audiomoths and GPS hats together, and they have been able to get a GPS fix from inside a lab room inside a building, far away from doors and windows. However, two other Audiomoth/GPS hat units have not been able to get a fix from the same location, even if close to doors and windows. I have been using a SETTINGS.TXT file that the functional units have been able to get a fix with. I can provide the file if it would be helpful to see it.

Both Audiomoths function properly with Audiomoth-Firmware-Basic and can record files using a configuration from the Config App that does not use the GPS hat. When I soldered the functioning Audiomoth/GPS hat units together, I used a multimeter to measure their resistances and connections, and…

Hello Open Acoustic Devices,

I wanted to get some clarification on a problem we have observed when using the Audiomoth to collect recordings in an outdoor natural area. We sample at 192kHz, 300s/300s record/sleep cycle, and equip our Audiomoths with 6 or 9 AA rechargeable batteries.

We have noticed that our Audiomoth sometimes changes mode during deployments and produces "empty" 488-byte files that do not contain data and are short. It goes into this mode and might generate 100s of such files and then comes back to generating normal files.

I am attaching a couple screenshots from previous deployments of the file explorer view alongside an exiftool-based readout of the file metadata. You can see the normal files will be generated before and after the error "488-byte" files. These problems persist in the same manner even to this day with new firmware and new Audiomoths.

I can generate a SUMMARY.CSV…

Hi,

new to the game. I was always curious to record birds and bats here but never got further than Bird.net on my phone.

So I bought an AudioMoth :) Got some nice recordings from "our" bats here yesterday night.

Moth Play is a nice browser-based app; however, I see some possible improvements:

• Keyboard Navigation in File-List: Maybe CTRL-Cursor Up/Down to goto the next/prev file and load it. Nice for checking through the recordings (now it is mouse only?)

• Save as: Saves a WAV playable on any computer JUST as it is played inside Moth Play for sharing. Should ask for a File-Name and remember its folder All the best, Carsten
  

I need to synchronize the recordings of several AudioMoth devices with microsecond precision. I attempted to do this by turning the devices on approximately simultaneously in default mode and recording a reference signal both at the beginning (within a few seconds) and at the end of the recording, just before shutting the devices down.

Unfortunately, the signal at the beginning and the end of the recording is sometimes not captured.

I have three questions regarding this:

1. How long does it take for an AudioMoth device to start recording after being powered on (in seconds or milliseconds)?

2. At what intervals are recordings saved to memory (e.g., every minute, every 15 minutes)?

3. Are any recordings lost or skipped during the saving process, or is all data continuously stored?

Hi, I'm using the civil sunset to civil dawn setting for my nocturnal migrating bird recordings, based on lat/long and using a rounding of 1 minute. My recordings start about 3 minutes later than the scientific sunrise/sunset tables I used in the past. Is this normal variation for the AudioMoth, or is there something else I can do to have an exact match with the times calculated in the tables? Thanks for your assistance!

John

I wonder if it is possible for the developers to add a feature to the firmware whereby configuration files could be made time and date specific?

In other words during daylight hours a configuration optimized for birds and mammals could be loaded, and during the hours of darkness a configuration optimized for the ultrasonic detection of bats loaded? or alternate between night time ultrasonic and normal spectrum on different days.

This would be a powerful feature maximizing the amount of data a single device could gather in an unattended deployment.

Hello, i have the audiomoth recording continuously 20s on and 5s off but I want to get it to only record when the amplitude and frequency are correct. Please see my config file below. Any suggestions on changes I need to make please?