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Automatic detection of estuarine dolphin whistles in spectrogram images
[article]
2019
arXiv
pre-print
An algorithm for detecting tonal vocalizations from estuarine dolphin (Sotalia guianensis) specimens without interference of a human operator is developed. The raw audio data collected from a passive monitoring sensor in the Canan\'eia underwater soundscape is converted to spectrogram images, containing the desired acoustic event (whistle) as a linear pattern in the images. Detection is a four-step method: first, ridge maps are obtained from the spectrogram images; second, a probabilistic Hough
arXiv:1909.04425v1
fatcat:jwfwzkrlaredtkez6ahoswc34q