Changes

1. New rule indexing via a generalised trie that makes speech string computation up to 10 times faster.

2. New Multi-axis constraint system for rule definition to support addition rule sets, multi-modality, localisation etc.

3. New grammar data structure for the uniform treatment of administrative information during rule dispatch, such as grammatical cases, corrections, font information, etc.

4. Prosody markup support for Audio CSS, Sable, SSML, VoiceXML.

5. Enhanced semantic recognition and handling of two dimensional structures, like equation systems, multi-line formulas, etc.

6. Emacspeak support. See also the release notes for Emacspeak v46.0 for details.

7. Uses semantic interpretations by default. This a change of behaviour from v1.x.x!

8. Improved build system with npm install using latest closure version (without NTI).

9. Removes deprecated API functions processExpression and processFile.

10. Various bug fixes.

Acknowledgements

A number of organisations provided funding and support for the continuing development of SRE. In particular, thanks to

• the Mozilla Foundation for funding work on data structure improvements under the MOSS scheme.
• Benetech for funding work on multi-line equations and two dimensional layout with a Diagram Center grant.
• AMS and the MathJax consortiumn for continuing financial and logistical support.

Also thanks to the following individuals for contributions, testing, feedback and encouragement:

Peter Krautzberger and Davide Cervone (MathJax), TV Raman (Emacspeak), Sue-Ann Ma and Anh Bui (Benetech), Jamie Teh (NVDA).