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Electrical Engineering and Systems Science > Audio and Speech Processing

arXiv:2109.14061 (eess)
[Submitted on 28 Sep 2021]

Title:The impact of non-target events in synthetic soundscapes for sound event detection

Authors:Francesca Ronchini, Romain Serizel, Nicolas Turpault, Samuele Cornell
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Abstract:Detection and Classification Acoustic Scene and Events Challenge 2021 Task 4 uses a heterogeneous dataset that includes both recorded and synthetic soundscapes. Until recently only target sound events were considered when synthesizing the soundscapes. However, recorded soundscapes often contain a substantial amount of non-target events that may affect the performance. In this paper, we focus on the impact of these non-target events in the synthetic soundscapes. Firstly, we investigate to what extent using non-target events alternatively during the training or validation phase (or none of them) helps the system to correctly detect target events. Secondly, we analyze to what extend adjusting the signal-to-noise ratio between target and non-target events at training improves the sound event detection performance. The results show that using both target and non-target events for only one of the phases (validation or training) helps the system to properly detect sound events, outperforming the baseline (which uses non-target events in both phases). The paper also reports the results of a preliminary study on evaluating the system on clips that contain only non-target events. This opens questions for future work on non-target subset and acoustic similarity between target and non-target events which might confuse the system.
Subjects: Audio and Speech Processing (eess.AS); Machine Learning (cs.LG); Sound (cs.SD)
Cite as: arXiv:2109.14061 [eess.AS]
  (or arXiv:2109.14061v1 [eess.AS] for this version)
  https://doi.org/10.48550/arXiv.2109.14061
Journal reference: Proceedings of the 6th Detection and Classification of Acoustic Scenes and Events 2021 Workshop (DCASE2021)
Related DOI: https://doi.org/10.5281/zenodo.5770113

Submission history

From: Francesca Ronchini [view email]
[v1] Tue, 28 Sep 2021 21:46:19 UTC (42 KB)
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