arXiv AI

Acoustic Imaging for UAV Detection: Dense Beamformed Energy Maps and U-Net SELD

arXiv:2508. 00307v4 Announce Type: replace-cross Abstract: We introduce a U-net model for 360{\deg} acoustic source localization formulated as a spherical semantic segmentation task.

arXiv Machine Learning
Sep 17

The Unbearable Weight: Scaling Models and Methods for UAV Audio Classification

The paper investigates how to balance model size and fine‑tuning strategy for UAV audio classification. Using a dataset of 3,100 clips across 31 drone classes, it compares transformer and convolutional backbones under full fine‑tuning, classifier‑only fine‑tuning, and four parameter‑efficient fine‑tuning methods. Results show that selective batch‑norm tuning of EfficientNet‑B7 yields the best accuracy (97.65%) while updating less than 0.5% of parameters, and that lightweight CNNs generally outperform transformers in both accuracy and efficiency.

By Andrew P. Berg, Qian Zhang, Mia Y. Wang