Akoostix continues to experiment with flexible, low-processing-load marine mammal detection options suitable for implementation in both workstations and low-power embedded systems. Building on previous work, additional processing stages have been added to normalize and de-noise spectrograms using a wide variety of user-configurable options. These pre-processing options can be optimized for the signals of interest, which enhances targets while significantly reducing the impact of structured noise that cause false alarms with other methods. Band-limited signal excess is then computed using one of several weighting functions, after which detection is performed on the signal excess time series. Out-of-band tests are also performed to ensure band-limited signals. The detector is tested on the workshop Minke whale localization dataset with configurations of varying complexity and performance (detection and processing load) are compared to other detection algorithms.

Link To Publication