This study investigates the efficacy of data augmentation techniques for low-resource automatic speech recognition (ASR), focusing on two endangered Austronesian languages, Amis and Seediq. Recognizing the potential of self-supervised learning (SSL) in low-resource settings, we explore the impact of data volume on the continued pre-training of SSL models. We propose a novel data-selection scheme leveraging a multilingual corpus to augment the limited target language data. This scheme utilizes a language classifier to extract utterance embeddings and employs one-class classifiers to identify utterances phonetically and phonologically proximate to the target languages. Utterances are ranked and selected based on their decision scores, ensuring the inclusion of highly relevant data in the SSL-ASR pipeline. Our experimental results demonstrate the effectiveness of this approach, yielding substantial improvements in ASR performance for both Amis and Seediq. These findings underscore the feasibility and promise of data augmentation through cross-lingual transfer learning for low-resource language ASR.

本研究针对低资源自动语音识别（ASR）技术，关注两种濒危的南岛语言Amis和Seediq，探讨数据增强技术的有效性。通过提出一种多语种语料库的数据选择方案，利用自监督学习在低资源环境下进行预训练，从而显著提高ASR性能，展示了通过跨语言迁移学习进行数据增强的可行性和潜力。

探索数据量对极低资源语言自动语音识别的影响