Attention-Driven Multichannel Speech Enhancement in Moving Sound Source Scenarios

Yuzhu Wang; Archontis Politis; Tuomas Virtanen

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arXiv · 2312.10756

Attention-Driven Multichannel Speech Enhancement in Moving Sound Source Scenarios

Yuzhu Wang·Archontis Politis·Tuomas Virtanen

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Abstract

Current multichannel speech enhancement algorithms typically assume a stationary sound source, a common mismatch with reality that limits their performance in real-world scenarios. This paper focuses on attention-driven spatial filtering techniques designed for dynamic settings. Specifically, we study the application of linear and nonlinear attention-based methods for estimating time-varying spatial covariance matrices used to design the filters. We also investigate the direct estimation of spatial filters by attention-based methods without explicitly estimating spatial statistics. The clean speech clips from WSJ0 are employed for simulating speech signals of moving speakers in a reverberant environment. The experimental dataset is built by mixing the simulated speech signals with multichannel real noise from CHiME-3. Evaluation results show that the attention-driven approaches are robust and consistently outperform conventional spatial filtering approaches in both static and dynamic sound environments.

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BibTeX RIS

Yuzhu Wang, Archontis Politis, Tuomas Virtanen. 2023-12-17. Attention-Driven Multichannel Speech Enhancement in Moving Sound Source Scenarios. https://arxiv.org/abs/2312.10756

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