icListen HF Hydrophone

10 Hz – 200 kHz

Accurate – Simple – Reliable

The icListen HF is an intelligent digital hydrophone, regarded as the standard in the field of digital underwater acoustic measurement. The fully integrated device is capable of recording, transmitting, and processing underwater acoustic data in real time. The product is fully calibrated, equipped with a rechargeable battery, large internal memory, and the ability to process internal signals, along with built-in event detection functionality.

The device can be used as a digital hydrophone, an underwater sound data recorder, or simultaneously as both. The process of collecting ocean acoustic data is carried out with accuracy, simplicity, and reliability, supporting decision-making and enhancing the effectiveness of research or underwater engineering missions.

Category:

Key Features

  • Edge Processing: The device is capable of processing data directly at the source, reducing latency and optimizing transmission performance.
  • Event Detection: The Epoch mode enables real-time detection and response to acoustic events.
  • Remote Control: Users can configure and monitor the device via a web browser interface.
  • Streaming and Data Recording: Waveform (WAV), spectral, or real-time data can be recorded and streamed directly to a laptop, phone, or tablet.
  • Synchronization: Supports connection and synchronization of multiple hydrophones, creating a high-quality multi-channel measurement system.
  • High Sensitivity: Equipped with an ultra-low noise floor sensor and wide dynamic range, ideal for high-precision applications.

Included Software – Lucy II

Lucy II software enables users to view, record, and analyze data from multiple hydrophones directly on a personal computer or mobile device. It is an essential tool that simplifies the process of collecting and processing underwater acoustic data.

Highlighted Technical Specifications

Specification Value
Operating Frequency 10 Hz đến 200 kHz
Sensitivity (ALTA) -173 dB re V/μPa
Peak Sound Pressure Level (SPL) 180 dB re μPa
Sampling Rate 1 – 512 kS/sec
Dynamic Range 147 dB
Operating Depth 900 m or 3500 m (depending on version)
Signal Resolution 24-bit
Communication Interface Ethernet
Max Internal Storage Capacity 1 TB
Battery Life 8 giờ
Device Length (ALTA version) 304 mm
Data Collection Modes Waveform, FFT, Event Logging
Control Software Lucy II

What Makes icListen Unique?

Acoustic Sensor Element

Using Ocean Sonics’ proprietary ALTA sensor, the device offers high sensitivity, wide bandwidth, and long-term stable performance. Its integrated design eliminates the need for external preamplifiers, filters, analog–digital converters, and storage systems.

Smart Device Architecture

All signal processing components (preamplifier, filtering, conversion, storage, and data transmission) are integrated into a single device—optimizing size and minimizing connection risks.

Applications

The icListen HF device is designed for acoustic monitoring and measurement in marine environments:

  • Marine mammal monitoring
  • Earthquake and tsunami detection
  • Pile driving and offshore construction monitoring
  • Passive Acoustic Monitoring (PAM)
  • Marine noise analysis
  • Subsea pipeline leak detection

icListen HF Hydrophone

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Which icListen hydrophone is right for you?

icListen HF ALTA icListen HF ALTA-1 icListen AF ALTA

icListen HF ALTA

Frequency

10 Hz – 200 kHz

Sensitivity

-173 dB re V/µPa

Peak SPL

180 dB re µPa

Depth Rating

900 m

Communication Interface

Ethernet

Modes

Waveform/FFT/Event Detection

icListen HF ALTA 

Frequency

10 Hz – 200 kHz

Sensitivity

-173 dB re V/µPa

Peak SPL

180 dB re µPa

Depth Rating

3500 m, 6000 m

Communication Interface

Ethernet

Modes

Waveform/FFT/Event Detection

icListen AF ALTA

Frequency

10 Hz – 12 kHz

Sensitivity

-159 dB re V/µPa

Peak SPL

165 dB re µPa

Depth Rating

900 m, 3500 m

Communication Interface

Ethernet

Modes

Waveform/FFT/Event Detection

 

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