2021/10/05 by Bryan Sagredo, Sagredo, Bryan, Sonia Español‐Jiménez +3
Earth and Planetary Sciences · Engineering · Environmental Science · #Audio and Speech Processing (eess.AS) #FOS: Computer and information sciences #FOS: Electrical engineering #Marine animal studies overview #Maritime Navigation and Safety #Sound (cs.SD) #Underwater Acoustics Research #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2110.02151
openalex publication_date 2021/10/05 · openalex created_date 2022/07/25 · openalex updated_date 2026/07/28
We present a framework for detecting blue whale vocalisations from acoustic submarine recordings. The proposed methodology comprises three stages: i) a preprocessing step where the audio recordings are conditioned through normalisation, filtering, and denoising; ii) a label-propagation mechanism to ensure the consistency of the annotations of the whale vocalisations, and iii) a convolutional neural network that receives audio samples. Based on 34 real-world submarine recordings (28 for training and 6 for testing) we obtained promising performance indicators including an Accuracy of 85.4% and a Recall of 93.5%. Furthermore, even for the cases where our detector did not match the ground-truth labels, a visual inspection validates the ability of our approach to detect possible parts of whale calls unlabelled as such due to not being complete calls.