8. A method for converting text to speech, the method comprising: at an electronic device with a processor and memory storing one or more programs for execution by the processor: parsing a document to identify a subset of text to be converted to speech, the subset of text having a context; creating an announcement comprising a spoken description of the context; determining, by the processor, an order in which the announcement and a spoken form of the subset of text are to be spoken, wherein the determined order comprises speaking the announcement prior to the spoken form of the subset of text; and generating audio that includes the spoken form of the subset of text and the announcement, wherein the announcement is spoken prior to the spoken form of the subset of text.
16. The method of claim 8 , further comprising: generating a text-to-speech processing script that includes the subset of text and the announcement, wherein the text-to-speech processing script is processed to generate the audio.