Voxtlm: unified decoder-only models for consolidating speech recognition/synthesis and speech/text continuation tasks

• URL: http://arxiv.org/abs/2309.07937v3
• Date: Wed, 24 Jan 2024 15:36:31 GMT
• Title: Voxtlm: unified decoder-only models for consolidating speech recognition/synthesis and speech/text continuation tasks
• Authors: Soumi Maiti, Yifan Peng, Shukjae Choi, Jee-weon Jung, Xuankai Chang, Shinji Watanabe
• Abstract summary: We propose a decoder-only language model, VoxtLM, that can perform four tasks: speech recognition, speech synthesis, text generation, and speech continuation. VoxtLM integrates text vocabulary with discrete speech tokens from self-supervised speech features and uses special tokens to enable multitask learning.
• Score: 61.3055230762097
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We propose a decoder-only language model, VoxtLM, that can perform four tasks: speech recognition, speech synthesis, text generation, and speech continuation. VoxtLM integrates text vocabulary with discrete speech tokens from self-supervised speech features and uses special tokens to enable multitask learning. Compared to a single-task model, VoxtLM exhibits a significant improvement in speech synthesis, with improvements in both speech intelligibility from 28.9 to 5.6 and objective quality from 2.68 to 3.90. VoxtLM also improves speech generation and speech recognition performance over the single-task counterpart. Further, VoxtLM is trained with publicly available data and training recipes and model checkpoints are open-sourced to make fully reproducible work.

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