Ocean Sound Meter 2 (OSM 2)
Underwater sound level meter and recorder
The OSM 2 is a compact, over-the-side underwater sound level meter and acoustic recorder specifically designed for fast, reliable environmental noise assessments.
Precisely calibrated and easy to deploy from any vessel or fixed platform, the OSM 2 delivers real-time sound level metrics, live visualization, and audio monitoring while capturing high-quality acoustic data for verification and reporting. Its intuitive software and automated event detection supports confident, on-the-spot decision making during marine operations.
Features
Real-time display of sound levels in multiple metrics: rms SPL, PK, SEL, etc.
Live full-color spectrogram with synchronized audio playback
Built-in impulse detector with automated event logging to CSV
Easily deployed by hand with low-noise current-loop hydrophone
Battery pack for 24-hour runtime (optional)
Applications
Environmental noise and impact assessments
Pile driving and marine construction monitoring
Seismic survey sound level measurement
Sonar and active source monitoring
Ambient and background noise characterization
Learn more
Underwater sound level meter and recorder, giving calibrated sound levels in real time.
Contact us for support with your JASCO system.
For support resources including complete user guides, software updates, release notes, and technical bulletins, contact JASCO Technical Support.