OTD #007; Revision 3.
Group: misc.
This object type facilitates verbal intercommunication in the form of text which may be displayed or, if possible, synthesized as audible speech. This type will usually be combined with the "avatar" type.
This property contains a string identifying the preferred voice for speaking any speech messages originating from this object. In the current implementation, this string is actually interpreted as Scheme code to be executed by the Festival speech synthesizer in order to select a voice. (Or "#f" for the default voice) If omitted, any suitable default may be used.