The ModelTalker TTS system converts plain English text to speech. It uses a text to phoneme system which includes capabilities for parsing ToBI-like descriptions of the intonation. Synthesis is accomplished through a combination of database-driven speech and a variant on diphone-based phoneme to sound engines known as Biphone-Constrained Concatenation (BCC). Speech stored in the database encompasses common words and phrases in different contexts as well as a complete set of biphones. The BCC sound engine results in smoother, more natural speech, without sacrificing the ability to quickly "capture" new voices in the biphone inventories for the system.
Texts have been downloaded from this site, I have not seen the content of each of the speeches, but the overwhelming majority of these texts were told by Obama during his speeches. Anything else told by somebody else is negligible compared to the overall result of this analysis. According to Wikipedia The lexical diversity of a given text is defined as the ratio of total number of words to the number of different unique word stems.
While computer scientists have yet to build a working "universal translator" such as the one first described in the 1945 science-fiction novella "First Contact" and later employed by the crew of the Starship Enterprise on "Star Trek," the hurdles to creating one are being cleared. That is because the practical need for instant or simultaneous speech-to-speech translation is increasingly important in a number of applications. Take, for example, the hypergrowth of social networking and Skype chats that demand bidirectional, reliable, immediate translations. Similarly, when natural disasters strike, the problem of aid workers struggling to communicate with the stricken who often speak other languages can become overwhelming.
Second, Phillips tells us this case is about "expression." He cites cases where individuals successfully challenged laws that forced them to convey views they did not hold, such as the Jehovah's Witnesses who objected to having New Hampshire's slogan "Live Free or Die" stamped on their license plates. Yet baking a cake is not pure speech: It is at most intermingled speech and conduct. The Colorado law does not force Masterpiece Cakeshop to stamp a pro-gay slogan on its storefront. It does not force the shop to make wedding cakes at all.