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Conference Paper

ORCA-CLEAN: A deep denoising toolkit for killer whale communication

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Smeele,  S.       
Department of Human Behavior Ecology and Culture, Max Planck Institute for Evolutionary Anthropology, Max Planck Society;

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Citation

Bergler, C., Schmitt, M., Maier, A., Smeele, S., Barth, V., & Noth, E. (2020). ORCA-CLEAN: A deep denoising toolkit for killer whale communication. In Interspeech 2020 (pp. 1136-1140). International Speech Communication Association.


Cite as: https://hdl.handle.net/21.11116/0000-0007-FE01-A
Abstract
In bioacoustics, passive acoustic monitoring of animals living
in the wild, both on land and underwater, leads to large data
archives characterized by a strong imbalance between recorded
animal sounds and ambient noises. Bioacoustic datasets suffer
extremely from such large noise-variety, caused by a multitude
of external influences and changing environmental conditions
over years. This leads to significant deficiencies/problems concerning the analysis and interpretation of animal vocalizations
by biologists and machine-learning algorithms. To counteract
such huge noise diversity, it is essential to develop a denoising
procedure enabling automated, efficient, and robust data enhancement. However, a fundamental problem is the lack
of clean/denoised ground-truth samples. The current work
is the first presenting a fully-automated deep denoising approach for bioacoustics, not requiring any clean ground-truth,
together with one of the largest data archives recorded on
killer whales (Orcinus Orca) – the Orchive. Therefor, an approach, originally developed for image restoration, known as
Noise2Noise (N2N), was transferred to the field of bioacoustics, and extended by using automatic machine-generated binary masks as additional network attention mechanism. Besides
a significant cross-domain signal enhancement, our previous
results regarding supervised orca/noise segmentation and orca
call type identification were outperformed by applying ORCACLEAN as additional data preprocessing/enhancement step