9. A computing system, comprising: at least one processor; memory including instructions that, when executed cause the at least one processor to: receive text data; determine a first text segment of the text data, the first text segment including a first number of different phonetic units; determine a second text segment of the text data, the second text segment including a second number of different phonetic units; determine the first number is greater than the second number; send, based on the first number being greater than the second number, the first text segment to a first proofreader through a communications interface; receive feedback on the first text segment through the communications interface; add, based on the feedback, the first text segment to a text-to-speech (TTS) corpus, the TTS corpus comprising approved text segments; determine a third number of different phonetic units of the TTS corpus comprising the first text segment; determine the third number is less than a desired number of different phonetic units of the TTS corpus; and send, based on the third number being less than the desired number, the second text segment to a second proofreader through the communications interface.
9. A computing system, comprising: at least one processor; memory including instructions that, when executed cause the at least one processor to: receive text data; determine a first text segment of the text data, the first text segment including a first number of different phonetic units; determine a second text segment of the text data, the second text segment including a second number of different phonetic units; determine the first number is greater than the second number; send, based on the first number being greater than the second number, the first text segment to a first proofreader through a communications interface; receive feedback on the first text segment through the communications interface; add, based on the feedback, the first text segment to a text-to-speech (TTS) corpus, the TTS corpus comprising approved text segments; determine a third number of different phonetic units of the TTS corpus comprising the first text segment; determine the third number is less than a desired number of different phonetic units of the TTS corpus; and send, based on the third number being less than the desired number, the second text segment to a second proofreader through the communications interface. 11. The computing system of claim 9 , wherein the instructions causing the at least one processor to receive the feedback further cause at least one processor to receive audio data including an utterance corresponding to the first text segment from the first proofreader.