Some kindle models come with a text to speech software that has several optional settings. There is both male and female, as well as 3 speeds, which gives 6 different combinations.
In theory, a low budget writer could create a complete audio book using only synthetic voices, 3 male & 3 female. It would have the advantage of the smaller file size of a text book, but still allow for distinct character voices.
For this to work, there would need to be code in the book that switched between the 6 optional native voices. Assuming the user has activated the text to speech speech.
What (if any) code could I include a .mobi file that would control the native voice synthesizer?