Rényi entropy-based detection of North Atlantic right whale gunshot vocalizations

2026/01/01 by Artorix de la Cruz, Mae Seto · 1 voice
Environmental Science · Earth and Planetary Sciences · Engineering · #Marine animal studies overview #Underwater Acoustics Research #Underwater Vehicles and Communication Systems

paper · pdf · doi:10.1121/10.0042199

openalex publication_date 2026/01/01 · openalex created_date 2026/01/09 · openalex updated_date 2026/06/26

Abstract

A Rényi spectral entropy is introduced for environment-adaptive detection of underwater acoustic signals in low signal-to-noise conditions. The Rényi order α is a control parameter; varying α enhances contrast between signals and background noise and improves detectability. The entropy variance as a function of α exhibits four regimes separated by crossover points, from which an optimal interval for signal selection is identified. This establishes α as a single tunable parameter to optimize detection performance. The approach is validated on passive recordings of North Atlantic right whale gunshots and outperforms a detector based on the Shannon spectral entropy.

Citations

• Passive acoustic monitoring provides a fresh perspective on fundamental ecological questions

Discussions

• JASA-EL EDITOR'S PICK This article introduces a Rényi spectral entropy for environment-adaptive detection of underwater acoustic signals in low signal-to-noise conditions. https://doi.org/10.1121/10. [bsky, 0 points, 0 comments]

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