eSpeakNG

eSpeakNG is a free and open-source, cross-platform, compact, software speech synthesizer. It uses a formant synthesis method, providing many languages in a relatively small file size. eSpeakNG (Next Generation) is a continuation of the original developer's project with more feedback from native speakers. Because of its small size and many languages, eSpeakNG is included in NVDA[2] open source screen reader for Windows, as well as Android,[3] Ubuntu[4] and other Linux distributions. Its predecessor eSpeak was recommended by Microsoft in 2016[5] and was used by Google Translate for 27 languages in 2010;[6] 17 of these were subsequently replaced by proprietary voices.[7] The quality of the language voices varies greatly. In eSpeakNG's predecessor eSpeak, the initial versions of some languages were based on information found on Wikipedia.[8] Some languages have had more work or feedback from native speakers than others. Most of the people who have helped to improve the various languages are blind users of text-to-speech.