eSpeak NG online documentation User Guide espeak-ng Command Line speak-ng Command Line Supported Languages SSML and HTML Support Contributor Guide Building eSpeak NG Creating and Editing Languages and Voices Adding or Improving a Language Text to Phoneme Translation Numbers Voice Files MBROLA Voices Phoneme Tables Intonation Phonemes Phoneme Features and the International Phonetic Alphabet Phoneme Model Kirshenbaum (ASCII-IPA) Transcription Scheme X-SAMPA Transcription Scheme Conlang X-SAMPA Transcription Scheme Pronunciation Guides English License