18. The method of claim 17 , wherein providing the input to the neural network comprises: providing, by the one or more computers, input to the neural network that includes a sequence of phonetic units that form a phonetic representation of the text in the first language.
18. The method of claim 17 , wherein providing the input to the neural network comprises: providing, by the one or more computers, input to the neural network that includes a sequence of phonetic units that form a phonetic representation of the text in the first language. 19. The method of claim 18 , wherein the prosody information for the text that is output by the neural network indicates, for each phonetic unit in the sequence of phonetic units that form the phonetic representation of the text in the first language, a duration, an energy level, or a fundamental frequency coefficient.