Barosin, Emily, and Kaustubha Raghukumar. “Towards more accurate sound field verification using directional acoustic filtering.” JASA Express Lett. 5, 046001 (2025).
Abstract:
Attributing omnidirectional sound levels to a specific source in the ocean can be challenging when there are multiple competing sources of sound such as boats, or biological activity. Here, we present a method to directionally filter acoustic measurements based on vector measurements of acoustic pressure and particle velocity. The directional discrimination is applied to estimate sound energy from two marine energy sources: sound generated during the decommissioning of an oil platform and those from an operating tidal energy converter. The application of a directional mask leads to distinctly different spectra and some differences in energy, relative to the unmasked scenarios. VC 2025 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Keywords: Acoustical properties, Acoustic measurements and instrumentation, Acoustic modeling, simulation and analysis, Acoustic filters, Spectrograms, Tidal energy, Turbines, Water transportation, Frequency spectrum, Bioactivity