Aural-M3

The AURAL-M3 recorders capture acoustic and environmental data over long periods. Ideal for studying underwater noise and monitoring marine mammals, they offer high storage capacity, durability, and autonomy.

Aural-M3

The AURAL-M3 (Autonomous Underwater Recorder for Acoustic Listening, version M3) is designed to capture and record acoustic data in challenging marine environments. Ideal for oceanographic research, marine wildlife monitoring, and observing human activities underwater, this sophisticated device is equipped with highly sensitive hydrophone sensors.

These sensors can detect a wide range of acoustic frequencies, from the low frequencies used by large marine mammals to the high frequencies needed for detecting smaller marine organisms and anthropogenic activities.

Specification
Name
Details
Physical
64 (0.15×1.19m), 128 (0.15×1.75m)
Dimensions
Instrument dimensions
64 (29kg), 128 (63kg)
Weight (in air)
Instrument total weight (including the batteries)
Delrin, Fiberglass/Epoxy and Stainless steel 316
Material
Materials used to assemble the instrument
Mechanical
1200m
Tested depth
Tested operating depth
Electrical
~300 days typical (238 to 800 days according to the configuration)
Battery Life
The battery life is dependent on the recording parameters (filtering, recording mode, cycle period, etc.)
Software
up to 5x 1TB for a total of 5TB
Storage Capacity
Maximum storage capacity on the SD cards
Continuous or cycle (configurable)
Recording Modes
The AURAL-M3 can be configured for continuous recording or set to record a configurable number of minutes every configured period length
Configurable
Delayed Recording
The AURAL-M3 can be configured to start recording in the future
.wav
Data format
Format of the recorded data
Acoustic
HTI-96-MIN or HTI-99-HF
Hydrophone
Supported hydrophone models
2000-128 000 Samples/sec
Sampling Rate
10 to 64 000 Hz
Frequency Range
Range of the audio signal frequency
~165 dBV/µPa
Sensitivity
Typical hydrophone sensitivity
138 dB re 1µPa
Dynamic Range
Dynamic range of the AURAL-M3
24 bits
ADC resolution
Resolution of the analog-to-digital converter of the AURAL-M3
4 settings available: 9dB, 12dB, 15dB or 18 dB
Adjustable amplifier gain
Analog amplifier gain
Additionnal Sensors
0 to 1000PSI
Water pressure
Working range of the water pressure sensor embedded on the AURAL-M3
-10 to 40 degC
Internal temperature
Working range of the AURAL-M3

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