Application Notes
2023
Using the AudioMoth Live App with the AudioMoth USB Microphone
First published: 26/06/2023
The AudioMoth Live App is a desktop/laptop app which takes audio from any USB microphone and displays a live scrolling waveform and spectrogram, with options to make continuous recordings, monitor the audio input, or apply a heterodyne bat detector to the input.
Using AudioMoth GPS Sync to Make Synchronised Recordings
First published: 09/01/2023
Audiomoth GPS Sync allows AudioMoth to generate synchronised WAV files that are aligned with GPS time.
2022
Using HydroMoth to Make Underwater Recordings
First published: 25/06/2022
HydroMoth is a variant of the standard AudioMoth designed specifically for making underwater recordings with the AudioMoth underwater case.
Using AudioMoth with Filtered and Triggered Recordings
First published: 11/05/2022
The most recent versions of the AudioMoth firmware (version 1.8.0) and configuration app (version 1.7.0) introduce two new functionalities: the ability to apply low-pass, band-pass or high-pass filters on the device, and the ability to reduce recorded file size by applying an amplitude threshold.
Using the AudioMoth USB Microphone Firmware and Hardware
First published: 25/04/2022
The new AudioMoth USB Microphone firmware (AudioMoth-USB-Microphone) allows all existing AudioMoth hardware versions to be used as configurable USB microphones with a sample rate of up to 384kHz.
First published: 01/02/2022
From firmware version 1.7.0 all AudioMoth devices greater than 1.0.0, and all uMoth and AudioMoth Dev devices, are compatible with external GPS boards which can synchronise acoustic events across devices.
2021
AudioMoth Triggered T.WAV File Format
First published: 04/01/2021
Version 1.4.0 of the AudioMoth firmware introduced a file format for triggered recordings that allows silent periods between periods of audio content to be en-coded within a standard WAV file.
2020
Acoustic Configuration using AudioMoth Chime
First published: 28/11/2020
AudioMoth is capable of receiving acoustically encoded data via its microphone. This document describes a robust protocol for this data transfer, called AudioMoth Chime, that is included in the standard AudioMoth firmware from version 1.5.0 onwards
Using AudioMoth with External Electret Condenser Microphones
First published: 17/11/2020
From hardware version 1.2.0 using firmware version 1.5.0 on-wards, AudioMoth is compatible with external electret condenser mono microphones, commonly known as plug-in powered (PIP) microphones.
AudioMoth Temperature Measurement
First published: 06/06/2020
The AudioMoth micro-controller contains a factory-calibrated temperature sensor. This sensor has not been used in previous versions of the AudioMoth firmware. However, version 1.4.0 adds a temperature measurement at the start of each recording with the results written to the comments section of the WAV file header.
An Injection Moulded Case for AudioMoth
First published: 21/05/2020
While lightweight ziplock bags can be used to deploy AudioMoth for short periods of time in mild conditions there is a clear need for a more robust solution for long-term deployments. To address this need we have developed a waterproof injection moulded case specifically designed for AudioMoth.