Would be great to have a speech to text integrated in High Fidelity, for NPC, language learning, transcription of presentations, translation, etc. For this purpose we can use some free, open source toolkits like CMUSphinx:

https://cmusphinx.github.io/2015/10/qtspeechrecognition-api-for-qt-using-pocketsphinx/

https://cmusphinx.github.io/

http://jrmeyer.github.io/asr/2016/01/09/Installing-CMU-Sphinx-on-Ubuntu.html

or Julius:

https://github.com/julius-speech/julius