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MLCA-AVSR: Multi-Layer Cross Attention Fusion based Audio-Visual Speech Recognition (2401.03424v3)

Published 7 Jan 2024 in cs.SD, cs.AI, and eess.AS

Abstract: While automatic speech recognition (ASR) systems degrade significantly in noisy environments, audio-visual speech recognition (AVSR) systems aim to complement the audio stream with noise-invariant visual cues and improve the system's robustness. However, current studies mainly focus on fusing the well-learned modality features, like the output of modality-specific encoders, without considering the contextual relationship during the modality feature learning. In this study, we propose a multi-layer cross-attention fusion based AVSR (MLCA-AVSR) approach that promotes representation learning of each modality by fusing them at different levels of audio/visual encoders. Experimental results on the MISP2022-AVSR Challenge dataset show the efficacy of our proposed system, achieving a concatenated minimum permutation character error rate (cpCER) of 30.57% on the Eval set and yielding up to 3.17% relative improvement compared with our previous system which ranked the second place in the challenge. Following the fusion of multiple systems, our proposed approach surpasses the first-place system, establishing a new SOTA cpCER of 29.13% on this dataset.

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Authors (4)
  1. He Wang (294 papers)
  2. Pengcheng Guo (55 papers)
  3. Pan Zhou (220 papers)
  4. Lei Xie (337 papers)
Citations (8)
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