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Researchers Release R Tool to Speed Freshwater Acoustic Analysis

The protocol reduces manual workloads by grouping unlabelled river sounds using signal features.

Overview

  • Griffith University’s team led by Katie Turlington published the peer‑reviewed method in Methods in Ecology and Evolution and released the tool publicly for free.
  • Field tests in South‑East Queensland reported roughly 90% correct identification of distinct sounds with substantially less effort than manual analysis.
  • The approach clusters similar signals by time, frequency and amplitude, enabling exploratory work without reference libraries or pre‑labelled data.
  • The system detected biological sounds even under constant flow noise, a common obstacle in river recordings.
  • The R‑based workflow is described as scalable to very small and very large datasets and is intended for broader validation across diverse ecosystems.