1. A concatenation cost database stored in a computer-readable medium, the concatenation cost database generated according to a method comprising: synthesizing a body of speech; identifying acoustic unit sequential pairs generated in the body of speech and their respective concatenation costs; and storing the respective concatenation costs in a concatenation cost database.
1. A concatenation cost database stored in a computer-readable medium, the concatenation cost database generated according to a method comprising: synthesizing a body of speech; identifying acoustic unit sequential pairs generated in the body of speech and their respective concatenation costs; and storing the respective concatenation costs in a concatenation cost database. 2. The concatenation cost database of claim 1 , wherein the identified acoustic unit sequential pairs are used to prune an acoustic unit database.