Speech translation has recently become an increasingly popular topic of
research, partly due to the development of benchmark datasets. Nevertheless,
current datasets cover a limited number of languages. With the aim to foster
research in massive multilingual speech translation and speech translation for
low resource language pairs, we release CoVoST 2, a large-scale multilingual
speech translation corpus covering translations from 21 languages into English
and from English into 15 languages. This represents the largest open dataset
available to date from total volume and language coverage perspective. Data
sanity checks provide evidence about the quality of the data, which is released
under CC0 license. We also provide extensive speech recognition, bilingual and
multilingual machine translation and speech translation baselines with
open-source implementation.

发布 CoVoST 2 语料库，其中包括来自 21 种语言翻译成英语和从英语翻译成 15 种语言的大规模多语言语音翻译语料库，此数据集是目前总量最大、语言覆盖面最广的公开数据集，同时提供 extensive 的语音识别、双语和多语言机器翻译及语音翻译的基线结果。