9. The system of claim 1 , further comprising a database of recorded audio pieces the speech synthesizer can use and concatenate together to synthesize speech, wherein the database of recorded audio pieces includes audio pieces of non-lexical cues.
9. The system of claim 1 , further comprising a database of recorded audio pieces the speech synthesizer can use and concatenate together to synthesize speech, wherein the database of recorded audio pieces includes audio pieces of non-lexical cues. 10. The system of claim 9 , wherein the audio pieces of non-lexical cues in the database include at least one audio piece of a parasitic lexical cue that is a varied form of another audio piece in the database, wherein the varied form comprises one or more of a phrasal stress, an intonation, or a lengthening of at least a portion of the another audio piece.