We present a method for continual learning of speech representations for multiple languages using self-supervised learning (SSL) and applying these for automatic speech recognition. There is an abundance of unannotated speech, so creating self-supervised representations from raw audio and finetuning on a small annotated datasets is a promising direction to build speech recognition systems. Wav2vec models perform SSL on raw audio in a pretraining phase and then finetune on a small fraction of annotated data. SSL models have produced state of the art results for ASR. However, these models are very expensive to pretrain with self-supervision. We tackle the problem of learning new language representations continually from audio without forgetting a previous language representation. We use ideas from continual learning to transfer knowledge from a previous task to speed up pretraining a new language task. Our continual-wav2vec2 model can decrease pretraining times by 32% when learning a new language task, and learn this new audio-language representation without forgetting previous language representation.

本文介绍了一种方法，可以将预先训练的自我监督（SSL）语音表示转移到多种语言中，使用适配器模块加快新语言任务的预训练，并在不遗忘先前语言表示的情况下学习新的音频-语言表示，然后应用这些语言表示进行自动语音识别。

基于适配器的预训练方法用于高效可扩展的自监督语音表征学习