The AT&T Natural Voices are quality commercial grade voices that are conidered by many users to be one of the most realistic human-sounding synthetic voices available.
AT&T Natural Voices can be purchased from ZABAWARE who are also the developers of the Ultra Hal AI program. The AT&T Natural voices include both a SAPI 4 and SAPI 5 versions. You MUST use the SAPI 4 version with your DesktopMates characters for lip sync functions to work.
To hear samples and purchase AT&T voices go to
ZABAWARE AT&T Voices
Support for the AT&T Voices is provided by Zabaware, typically by searching or posting in their forums.
Speech Technology Support Forums
Here's some solutions to a few common issues:
Using 32 bit voices in 64 bit windows
Selecting the Correct SAPI version