A low-cost open-source acoustic logger for biodiversity and environmental monitoring.
Our prototype device is based on the Silicon Labs Gecko processor range and provides a low-cost acoustic logger which can record uncompressed audio to an SD card at up to 250,000 samples per second. Onboard acoustic recognition algorithms allow the device to decide when and what to record, and allow the computation and storage of acoustic features and complexity indices, rather than raw waveforms.
EFM32 Gecko processor
WAV recordings to SD card
Capable of logging up to 125kHz
Powered by 3 x AAA batteries
Analog MEMS microphone
Measures just 50 x 38 x 12 mm
Configurable USB interface
Onboard real time clock
We are currently working with a number of partners to trial these prototypes in real-world applications. Our aim is to understand typical use cases and the operational requirements that these impose in order to design the next generation of devices.
Soundtrap.io is being developed by a team led by Prof. Alex Rogers at the University of Oxford. For more details, please contact him at firstname.lastname@example.org.
The team also includes Peter Prince and Andrew Hill, PhD students at the University of Southampton.