20. The method of claim 18 , further comprising the steps of: damping a change in the calculated value of the at least one parameter by applying a filtering operation to produce a damped value; and setting the calculated value equal to the damped value.
24. The method of claim 20 wherein the step of processing a message to be synthesized by the TTS voice synthesizer further comprises the step of identifying at least one control character within the message indicating the at least one break.