FUN-SSL: Full-Band Layer Followed by U-Net With Narrow-Band Layers for Multiple Moving Sound Source Localization
Year: 2026
Type: conference-paper
Abstract: Dual-path processing along the temporal and spectral dimensions has shown to be effective in various speech processing applications. While the sound source localization (SSL) models utilizing dual-path processing such as the FN-SSL and IPDnet demonstrated impressive performances in localizing multiple moving sources, they require significant amount of computation. In this paper, we propose an architecture for SSL which introduces a U-Net to perform narrow-band processing in multiple resolutions to reduce computational complexity. The proposed model replaces the full-narrow network block in the IPDnet consisting of one full-band LSTM layer along the spectral dimension followed by one narrow-band LSTM layer along the temporal dimension with the FUN block composed of one Full-band layer followed by a U-net with Narrow-band layers in multiple scales. On top of the skip connections within each U-Net, we also introduce the skip connections between FUN blocks to enrich information. Experimental results showed that the proposed FUN-SSL outperformed previously proposed approaches with computational complexity much lower than that of the IPDnet.
Authors: Yuseon Choi, Hyeonseung Kim, Jewoo Jun, Jong Won Shin
Institution: Gwangju Institute of Science and Technology
Language: English
Topic: Speech and Audio Processing
Subfield: Signal Processing
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4416257336
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