Recorder for long term deployments :
Abyssens offers a line of underwater acoustic recorders with high performances in acoustic recording and storage. Thanks to a self noise below sea state zero and a high dynamic range, ambient noise can be monitored together with high level sources.
DORI recorder – L addresses the issue of long term deployments in coastal areas.
Key technical specifications
|✓ High dynamic range up to 110 dB
✓ High storage capacity up to 16 TB
✓ Raw data storage (.wav) on 24 bits
✓ Autonomy of 6.9 months in continuous recording (energy & storage)
✓ Self noise below sea state zero
✓ Software configurable amplification gain and high pass filter using WiFi (without opening the recorder)
✓ Remote software update of the recorder
✓ Clean and secure access to SD cards (without contact with electronics)
Our main options
|✓ Temperature sensor
✓ Vacuum kit (allows you to test the watertightness of the device)
Typical use cases :
Two frequency ranges are available and offer you a complete listening range of the underwater soundscape. These underwater recorders can be used for PAM (Passive Acoustic Monitoring) allowing to listen the ambient noise and its constituents:
anthropogenic sounds : noise radiated by boats, sea works noises as pile driving, drilling or explosions, noise radiated by renewable marine energies
- biologic sounds : marine mammals, fishes and bentic activity
- geophonic sounds : wind, rain, seismic and volcanic activity
High frequency option allows listening up to 250 kHz, which is often requested for detecting clicks from marine mammals, such as harbor porpoises.