Passive Acoustic Monitoring Technology

For Marine Mammals and Noise 

Marine mammals produce a wide range of sounds from low frequency moans, such as those of the sperm whale, to high frequency echolocation clicks of harbour porpoises. Passive Acoustic Monitoring (PAM) uses our technology  to listen for these sounds, often using a hydrophone and an appropriate acoustic processing system, normally a sound card and a PC.

Decimus Passive Acoustic Monitoring System 

From the initial analog based detection systems, PAM has evolved with the revolution in PC microprocessors. This has allowed ever more complicated software detection systems, with more digital signal processing (DSP) capacity available.

Driven by a revolution in low power processors, we use the latest low power, high performance systems available today and remains at the forefront of these developments.

Data Acquisition Card DAQ Manufacturer 

The data acquisition card allows for detection of high frequency cetaceans clicks (e.g. harbour porpoise, bottlenose dolphin) on four channels simultaneously. This data can be played back through a PC using PAMGuard Software.

Our Systems can provide the user with robust and reliable data! 

Device status and detection information can be updated more frequently and is immediately available to a PC from anywhere in the world (providing there is a phone signal).

Benefits are 

  • Bespoke multiple and concurrent species detection
  • Long term autonomous deployment
  • Real time data retrieval
  • Encrypted data transmission and secure client access
  • Reduced risk of data loss
  • Great for marine mammal monitoring