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Human-Inspired Computing for Robust and Efficient Audio-Visual Speech Recognition
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DOI：10.1109/TC.2025.3582069.png)
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Abstract
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Humans excel at audiovisual speech recognition (AVSR), motivating the development of human-inspired computing for robust and efficient AVSR models. Spiking neural networks (SNNs), mimicking the brain’s information-processing mechanisms, offer a promising foundation. However, research on SNN-based AVSR remains limited, with most audio-visual methods focusing on object or digit recognition. These methods oversimplify multimodal fusion, neglecting modality-specific characteristics and interactions. Additionally, they often rely on future information, increasing recognition latency and limiting real-time applicability. Inspired by human speech perception, this paper proposes a novel human-inspired SNN named HI-AVSNN for AVSR, incorporating three computing characteristics: spike activity, cueing interaction, and causal processing. For cueing interaction, we introduce a Spike-Driven Visual-Cued Speech Processing (sVCSP) scheme, where visual features hierarchically guide speech processing to enhance critical features. For causal processing, we align the temporal dimension of SNN with that of audio-visual inputs and apply temporal masking to ensure only past and current information is used. For spike activity, in addition to SNNs, we incorporate event cameras to capture lip movements as spikes, efficiently encoding visual data like the human retina. Experiments on two event-based AVSR datasets demonstrate our method outperforms existing audio-visual SNN fusion techniques, showcasing the effectiveness, robustness, and efficiency achieved through our human-inspired computing.
Keywords:
Neuromorphic computing
spiking neural networks
event cameras
audio-visual speech recognition
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ICASSP 2024 - 2024 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
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ICASSP 2024 - 2024 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)IF0
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