Prosody control for HMM-based voices. Using the SSML <prosody> tag, it is now possible to control the intonation generated for HMM-based voices from markup. Of particular interest is the “contour” attribute, which allows you to change the shape of the intonation curve. For details and examples, see ProsodySpecificationSupport.
Expressive vocalizations in certain unit selection voices. MaryXML now supports a new <vocalization> tag, with which you can request the generation of non-verbal or para-verbal expressions as they are often produced by the listener in a conversation, such as “yeah”, “m-hm”, laughter, sigh, etc. For details and examples, see VocalizationSynthesis.