Our high performance underwater acoustic recorders DORI

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 200 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.

Our underwater acoustic recorders DORI differ according to several criteria:

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 alkaline 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.

To ensure the safety, a pressure relief valve is present on all systems. In addition, an optional vacuum kit is available. The kit allows you to test the watertightness of the device before deployment. This kit is compatible with all DORI recorders.

No cables are needed for configuration. You can use your smartphone or your laptop to access the recorder configuration directly in the field using WiFi without opening the recorder. To start the recording, nothing easier! No cables or magnets needed, you just have to turn on the selector to record position. Last recording configuration is automatically launched.

	XS	S	M	L
Reference (base)	DORI_recorder_XS	DORI_recorder_Sb DORI_recorder_Sc	DORI_recorder_Mb DORI_recorder_Mc	DORI_recorder_Lb DORI_recorder_Lc
Acoustics
ADC	24 Bits
Dynamic range	110 dB
Analog high pass filter	10 Hz or 370 Hz (Software configurable)
Analog amplification 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
RTC accuracy	1 ppm
Hydrophone
Low frequency [LF]	Hydrophone HTI-96-MIN Low noise – Analog bandwidth : 2 Hz – 30 kHz
High frequency [HF]	Hydrophone HTI-99-UHF Low noise – Analog bandwidth : 2 Hz – 250 kHz
SH for LF & HF	Standard : -185 dB re 1V/μPa, other on request
User configuration
Recording mode	Continuous or duty cycling
Scheduled mode	Immediate or scheduled start
Storage	Raw data [.wav] with selectable file duration
Configuration	WiFi (without opening the recorder)
Memory (internal micro SD Cards)
Maximum storage	4 TB		10 TB [HF] – 4 TB [LF]	16 TB [HF] – 10 TB [LF]
Power
Internal power	No internal power, external only	Rechargeable lithium battery or 10 alkaline C Cells	Rechargeable lithium battery or 24 alkaline D Cells	Rechargeable lithium battery or 48 alkaline D Cells
*Autonomy for continuous recording*
Battery version	–	11 days	2.9 months	5.6 months
Alkaline cells version	–	17 days	3.4 months	6.9 months
Autonomy details	see our online configurator or the autonomy tab for each product
Mechanical
Diameter	90 mm		145 mm
Length LF (based on LF integrated) HF: +23mm; Remote: -42mm	150 mm (without connector)	277 mm	battery version: 490 mm
	150 mm (without connector)	277 mm	cells version: 392 mm	cells version: 576 mm
Battery version weight	0.7 kg	1.5 kg	6.5 kg	9.0 kg
Cells version weight (with cells)	0.7 kg	1.9 kg	7.1 kg	12.0 kg
Pressure relief valve	Included
Maximum operating depth	300 m		250 m
Available options
Hydrophone connection	Integrated or remote with Subconn connector
Temperature sensor	Accuracy: ± 0.1 °C (between -5 to 50 °C)
Protective cage for hydrophone	Allows hydrophone shock protection. Increases the recorder LF length by 45 mm.
Mooring brackets	Allows insertion into a mooring line
Transport case	414 x 345 x 174 mm		cells version: 502 x 415 x 246 mm	687 x 528 x 276 mm
Transport case	414 x 345 x 174 mm		battery version: 687 x528 x 276 mm	687 x 528 x 276 mm
Vacuum kit	Compatible with all DORI recorders. Allows watertightness test.

Our high performance underwater acoustic recorders DORI

Discover our high performance underwater acoustic recorders: DORI

All is included!

Key specifications of our underwater acoustic recorders

✓ High dynamic range: 110 dB

✓ Raw data storage (.wav) on 24 bits

✓ Hearing frequency up to 200 kHz

✓ High storage capacity up to 16 TB

✓ Self noise below sea state zero

✓ Software configurable analog amplification gain and analog high pass filter

✓ Long-term deployments : continuous recording up to 6.9 months

✓ Configuration over WiFi (without opening the recorder)

✓ Clean and secure access to SD cards and energy (without contact with electronics)

✓ Remote software update of the recorder

A modular line of underwater acoustic recorders

Easiness, efficiency and reliability are our priorities

Clean and safe access to SD cards and energy

Easy to use and safe design

DaViS : DAta VIsualization Software

How to choose your underwater acoustic recorder?

Full technical specifications of DORI recorders