W3C:

2008-08-18: The Voice Browser Working Group has published the Proposed Recommendation of Pronunciation Lexicon Specification (PLS) Version 1.0. PLS provides the basis for describing pronunciation information for use in speech recognition and speech synthesis, for use in tuning applications, e.g., for proper names that have irregular pronunciations. Changes from the previous Working Draft can be found in Appendix D of the specification. Comments are welcome through 18 September. Learn more about the Voice Browser Activity. (Permalink)