Ocean Sonics Smart Digital Hydrophones

icListen HF Hydrophone with Reson Sensor - 10 Hz to 200 kHz

The 900m depth rated broadband Smart Hydrophone is based on the TC4059 sensor.  Frequency range is 10 Hz to 204 kHz with the upper limit software selectable. This product gives Reson users the performance they expect, integrated with the industry leading icListen Smart Hydrophone. The RB9 includes all the signal processing, event detection, large memory recorder and streaming features found in the icListen HF family of products.

High Frequency Applications:


  • Environmental Monitoring

  • Ambient Noise Measurement

  • Marine Renewable Energy

  • Pipeline Leak Detection

  • Ocean Observatories

  • Marine Mammal Monitoring

  • Ocean Noise Measurement


icListen HF Smart Hydrophone Applications

Environmental Monitoring


Sound is an important factor in the lives of many marine organisms and the human additions to ocean sound overlap the full range of animal uses for sound in the ocean. Researchers use hydrophones to study marine mammals and identify the thresholds of sound effects for each marine species and to predict how increasing anthropogenic sound will enhance the effects. 

Pipeline Leak Detection


Hydrophones are used as acoustic leak detectors because they identify the sound or vibration induced by water escaping from pipelines under pressure. When pressurized water leaks from a pipe it creates a sound or an acoustic signal that can travel through both the pipe wall and the water column in the pipeline. Most of the existing acoustic leak-detection techniques rely on external measurements of sound emitted from the turbulent jet of water escaping the pipe.

Shipping Noise


Hydrophones serve as an education tool for researchers, scientists, and students to help build awareness of the sensitivity of the marine environment and the impacts of commercial shipping. Monitoring of marine acoustic disturbances, changes in ambient ocean noise, and the potential effects of acoustic masking with regards to cetaceans, will help accurately assess the effects of shipping noise on the marine environment.

Offshore Wind Farms


Offshore wind projects can introduce noise to the marine environment via the construction process, turbine operation, and increased vessel traffic due to construction and maintenance. Passive acoustic monitoring provides a unique opportunity to track noise levels, biological activities, and to characterize the local marine soundscape before, during and after wind farm development.

Port & Harbor Security


Detection and tracking sources of underwater noise is of particular interest for reducing potential threats to port and harbor security. Hydrophones are used as a cost-effective and undetectable surveillance system for monitoring unidentified underwater targets, whether hostile, friendly or purely environmental.  The Ocean Sonics GSM Radio Buoy can supply instrument power and a communication link to send real-time hydrophone data to the user’s desktop.

Marine Renewable Energy


Tidal barrages are undersea tidal turbines, like wind turbines but driven by the sea, harnessing undersea currents. Tidal turbines do not have to spin as fast as windmills to generate power, because water is roughly 800 times more dense than air. Energy can be harnessed from the tides in two ways: using the change in height of the tides; and using the flow of the water.