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Are there individual acoustic signatures in the damselfish Dascyllus albisella?
J Acoust Soc Am
January 2025
Department of Biology, Boston University, Boston, Massachusetts 02115, USA.
Many animal species are known to show individuality in their acoustic communication. This variation in individual male signatures can be decisive for female choice. Within the damselfishes, Dascyllus species are known for prolific sound production during the realization of movements associated with courtship (i.
View Article and Find Full Text PDFTemporal patterns in Malaysian rainforest soundscapes demonstrated using acoustic indices and deep embeddings trained on time-of-day estimationa).
J Acoust Soc Am
January 2025
K. Lisa Yang Center for Conservation Bioacoustics, Cornell Lab of Ornithology, Cornell University, Ithaca, New York 14850, USA.
Rapid urban development impacts the integrity of tropical ecosystems on broad spatiotemporal scales. However, sustained long-term monitoring poses significant challenges, particularly in tropical regions. In this context, ecoacoustics emerges as a promising approach to address this gap.
View Article and Find Full Text PDFCase study: Evidence of long-term stability in a stereotyped whistle in a single free-ranging humpback dolphin (Sousa plumbea) found in sympatry (Tursiops aduncus).
JASA Express Lett
December 2024
Seasearch Research and Conservation, 4 Bath Road, Muizenberg, Cape Town 7950, South Africa.
This 11-year case study describes the acoustic behaviour of a resident Indian Ocean humpback dolphin during commercial swim-with-dolphin activities in Mozambique. Combining data collected using low-cost action cameras with full bandwidth hydrophone recordings, we identified a temporally stable stereotyped whistle contour that met the SIGnature IDentification bout criteria. This whistle was produced with potential information-enhancing features (bi-phonation and subtle variations in frequency modulation).
View Article and Find Full Text PDFRobust fundamental frequency-detection algorithm unaffected by the presence of hoarseness in human voice.
J Acoust Soc Am
December 2024
Department of Otorhinolaryngology and Head & Neck Surgery, Osaka University Graduate School of Medicine, Osaka 565-0871, Japan.
The fundamental frequency (fo) is pivotal for quantifying vocal-fold characteristics. However, the accuracy of fo estimation in hoarse voices is notably low, and no definitive algorithm for fo estimation has been previously established. In this study, we introduce an algorithm named, "Spectral-based fo Estimator Emphasized by Domination and Sequence (SFEEDS)," which enhances the spectrum method and conducted comparative analyses with conventional estimation methods.
View Article and Find Full Text PDFComparing neural networks against click train detectors to reveal temporal trends in passive acoustic sperm whale detections.
J Acoust Soc Am
December 2024
Sea Mammal Research Unit, School of Biology, University of St Andrews, KY16 9TH, St Andrews, United Kingdom.
Passive acoustic monitoring (PAM) is an increasingly popular tool to study vocalising species. The amount of data generated by PAM studies calls for robust automatic classifiers. Deep learning (DL) techniques have been proven effective in identifying acoustic signals in challenging datasets, but due to their black-box nature their underlying biases are hard to quantify.
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