Jointly Learning Visual and Auditory Speech Representations from Raw Data

• URL: http://arxiv.org/abs/2212.06246v2
• Date: Tue, 4 Apr 2023 18:14:54 GMT
• Title: Jointly Learning Visual and Auditory Speech Representations from Raw Data
• Authors: Alexandros Haliassos, Pingchuan Ma, Rodrigo Mira, Stavros Petridis, Maja Pantic
• Abstract summary: RAVEn is a self-supervised multi-modal approach to jointly learn visual and auditory speech representations. Our design is asymmetric w.r.t. driven by the inherent differences between video and audio. RAVEn surpasses all self-supervised methods on visual speech recognition.
• Score: 108.68531445641769
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We present RAVEn, a self-supervised multi-modal approach to jointly learn visual and auditory speech representations. Our pre-training objective involves encoding masked inputs, and then predicting contextualised targets generated by slowly-evolving momentum encoders. Driven by the inherent differences between video and audio, our design is asymmetric w.r.t. the two modalities' pretext tasks: Whereas the auditory stream predicts both the visual and auditory targets, the visual one predicts only the auditory targets. We observe strong results in low- and high-resource labelled data settings when fine-tuning the visual and auditory encoders resulting from a single pre-training stage, in which the encoders are jointly trained. Notably, RAVEn surpasses all self-supervised methods on visual speech recognition (VSR) on LRS3, and combining RAVEn with self-training using only 30 hours of labelled data even outperforms a recent semi-supervised method trained on 90,000 hours of non-public data. At the same time, we achieve state-of-the-art results in the LRS3 low-resource setting for auditory speech recognition (as well as for VSR). Our findings point to the viability of learning powerful speech representations entirely from raw video and audio, i.e., without relying on handcrafted features. Code and models are available at https://github.com/ahaliassos/raven.

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