Phonetic punctuation is an NVDA add-on that allows to convert punctuation signs into audio icons. In general, it can also convert any regular expressions into audio icons.
You can listen to a sample speech output with phonetic punctuation here (10 seconds audio): https://soundcloud.com/user-977282820/nvda-phonetic-punctuation-demo
TBD Latest PhoneticPunctuation release
phoneticPunctuationRules.json in NVDA user configuration directory.Phonetic punctuation depends on new NVDA speech framework, and as of today (October 2019), not all voice synthesizers have proper support for the new commands. This means that phonetic punctuation might not work correctly with some voice synthesizers.
Synthesizers known to work well with Phonetic Punctuation: Microsoft Speech API eSpeak * Windows OneCore Voices
Synthesizers known to have problems with PhoneticPunctuation: IBMTTS: see this issue. RHVoice: Break command is not supported.
Built-in audio icons were designed by T.V. Raman and are a part of emacspeak. For more information, see: https://github.com/tvraman/emacspeak/ .