Underwater acoustic modelling
CMST has developed a suite of underwater acoustic software and provides state-of-the-art modelling of sound propagation. Projects routinely involve the prediction and measurement of underwater sound produced by industrial operations such as seismic surveying, pile driving and shipping.
CMST continues to develop the THRUM underwater noise model, based on our underwater noise model tailored for predicting underwater noise from shipping and wind in the entire Australian Exclusive Economic Zone (EEZ). Development of THRUM at a higher spatial resolution for the Bass Strait is funded by the CSIRO-led Project 4.7 on Development of regional modelling and risk assessments to inform offshore renewable decision-making, part of the National Environmental Science Program Marine and Coastal Hub. The aim is to develop a modelling approach to enable application of THRUM to other locations across the world.
Signal processing
CMST develops software tools for automated signal detection and classification. CMST further has expertise in array processing and acoustic tracking, originally for defence purposes. Any of these directional sensing techniques, including Distributed Acoustic Sensing (DAS) using submarine optical fibres, are also applicable to ecosystem monitoring such as marine mammal detection.
References Selected Publications
Madhusudhana S, Gavrilov AN, Erbe C (2015) Automatic detection of echolocation clicks based on a Gabor model of their waveform. J Acoust Soc Am 137 (6):3077-3086. https://doi.org/10.1121/1.4921609
Madhusudhana S, Murray A, Erbe C (2020) Automatic detectors for low-frequency vocalizations of Omura’s whales, Balaenoptera omurai: A performance comparison. J Acoust Soc Am 147 (5):3078-3090. https://doi.org/10.1121/10.0001108
Erbe C, Peel D, Smith JN, Schoeman RP (2021) Marine acoustic zones of Australia. J Mar Sci Eng 9 (3):340. https://doi.org/10.3390/jmse9030340
