High acoustic performance, large storage capacity and low power are our three key words. Abyssens offers a line of underwater acoustic recorders with more than 110 dB of dynamic range, listening up to 250 kHz and with a maximum storage capacity up to 16 TB. Whether your need is occasional short listening or long-term monitoring, coastal or deep sea, an adapted design with an optimized price awaits you among the models below.
All the sea soundscape at your doorstep! Two frequency ranges are available and offer you a complete listening range of the underwater soundscape. In fact, they allow you to listen many types of acoustic sources such as biological sounds from snapping shrimps to the vocalizes of marine mammals, as well as human sounds from ship radiated noises to offshore works. Thanks to a self noise below sea state zero and a high dynamic range, ambient noise can be monitored together with high level sources.
Key specifications of our underwater acoustic recorders
✓ High dynamic range: 110 dB
✓ High storage capacity up to 4 TB (XS model) or 16 TB (L model)
✓ 3 power approaches: externally powered, internal UN38.3 air transportable rechargeable battery or alkaline C or D cells
✓ Clean and secure access to SD cards and energy (without contact with electronics)
✓ Configuration over WiFi (without opening the recorder)
✓ Software configurable amplification gain and high pass filter
✓ Raw data storage (.wav) on 24 bits
✓ Self noise below sea state zero
✓ Remote software update of the recorder
A modular line of underwater acoustic recorders
- First, the model of the recorder reflects the autonomy of the device, and is in adequacy with available energy and the maximum storage capacity. It is indicated by the letter: XS-S-M-L. The S model if for short deployments (15 days), the M model for medium deployments (3 months) and the L model for long deployments (6 months).
- Secondly, the type of internal power used: internal air transportable rechargeable lithium battery or cells (C and D). It is indicated by the letter: c-b.
Note that the XS version is powered by an external source and does not have an internal battery. It is thought to be integrated aboard vehicles such as ROV, AUV or gliders thanks to its very small size. It can also be used as a wired observatory with a cable on request.
The target frequency range is divided into two categories for all models:
- Low Frequency LF, equipped with an HTI96 MIN Low noise hydrophone: 2 Hz – 30 kHz,
- High Frequency HF equipped with an HTI99UHF hydrophone: 2 Hz – 250 kHz (allows click detection from marine mammals including the harbor porpoise).
In addition, an optional external temperature sensor is available.
Easiness, efficiency and reliability are our priorities
Clean and safe access to SD cards and energy
DORI design features an opening with a clean and protected access to the SD cards and the internal battery or cells without any contact with the electronics. Therefore you can enjoy a fast, clean and safe SD cards and cells change directly on the boat if needed! You can take advantage of the maximum data download speed of your computer by direct SD card access.
Easy to use and safe design
DaViS : DAta VIsualization Software
A post treatment dynamic visualization of the data is possible with the dedicated software: DaViS. It displays the spectrogram, the temporal evolution of Sound Pressure Level (SPL), the Power Spectral Density and the third octave band levels. In addition, this software allows an audio listening. This software is compatible with windows and free of charge (supplied with any recorder).
Full technical specifications of DORI recorders
The table below shows in details the technical specifications of DORI recorders.
|Analogue bandwidth||2 Hz – 30 kHz (LF) OR 2 Hz- 250 kHz (HF)
|Dynamic range||110 dB
|High pass filter||10 Hz or 370 Hz (Software configurable)|
|Gain||0 dB or 12 dB (Software configurable)|
|Sampling rates||LF : 31,25 kSps, 62,5 kSps, 125 kSps
HF : 31,25 kSps, 62,5 kSps, 125 kSps, 250 kSps, 360,36 kSps, 400 kSp
|Maximum acoustic level
||185 dB (with 0 dB gain)
|Recording||Continuous, Scheduled, Duty cycling|
|Storage||Raw data (.wav)|
|Configuration||WiFi (without opening the recorder)|
|Type||Internal SD Card Storage|
|Maximum storage||4 TB||10 TB (HF) – 4 TB (LF)
||16 TB (HF) – 10 TB (LF)
||No internal power, external only
||Rechargeable lithium battery or 10 C Cells||Rechargeable lithium battery or 24 D Cells||Rechargeable lithium battery or 48 D Cells|
|Autonomy for continuous recording
||–||11 days||2.9 months||5.6 months|
|Cells version||–||17 days||3.4 months||6.9 months|
||see our online configurator or the autonomy tab for each product
|Diameter||90 mm||145 mm|
|Length LF (HF: +23 mm)
||150 mm (without connector)||277 mm
||battery version: 490 mm|
|cells version: 392 mm||cells version: 576 mm|
|Battery version weight
|Cells version weight (with cells)
|Pressure relief valve||Included
|Maximum operating depth*||300 m
SH = -185 dB re 1V/μPa
|Temperature sensor||Accuracy: ± 0.1 °C (between -5 to 50 °C); ± 0.5 °C (between -40 to 125 °C)|
|Protective cage for hydrophone||Allows hydrophone shock protection. Increases the recorder LF length by 45 mm.|
|Transport case||414 x 345 x 174 mm||cells version: 502 x
415 x 246 mm
|687 x 528 x 276 mm|
|battery version: 687 x528 x 276 mm|
|Vacuum kit||Compatible with all DORI recorders. Allows watertightness test.|
* : other depths available on request
** : other hydrophones available on request