33. The system of claim 31 , wherein the means for determining comprise: means for requesting an endpoint that is the source of the text message to provide the speech feature vector; and means for receiving the speech feature vector from the endpoint.
31. A system, comprising: means for determining a speech feature vector for a voice associated with a source of a first text message; means for comparing the speech feature vector to a plurality of speaker models, wherein the plurality of speaker models are unrelated to the source of the first text message; means for selecting one of the speaker models as a preferred match for the voice based on the comparison; means for associating the selected speaker model with the source of the first text message; means for selecting one of the speaker models as a default selection if the speech feature vector cannot be determined; means for generating speech from the text message based on the selected speaker model; and means for automatically generating speech from subsequent text messages received from the source of the first text message, based on the selected speaker model.