14. The method of claim 13 , further comprising: determining whether the custom text-to-speech voice conforms to a selected synthesis quality.
14. The method of claim 13 , further comprising: determining whether the custom text-to-speech voice conforms to a selected synthesis quality. 16. The method of claim 14 , wherein when the custom text-to-speech voice does not conform to the selected synthesis quality, recording one of additional words and additional phrases to increase the in-domain inventory of synthesis speech units.