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Rate this topic  How Speech Synthesis Works (Microsoft.Speech)
A speech synthesizer takes text as input and produces an audio
stream as output. Speech synthesis is also referred to as text-
to-speech (TTS).  A synthesizer must perform substantial
analysis and processing to accurately convert a string of
characters into an audio stream that sounds just as the words
would be spoken. The easiest way to imagine how this works is to
picture the front end and back end of a two-part system.  The
front end specializes in the analysis of text using natural
language rules. It analyzes a string of characters to determine
where the words are (which is easy to do in English, but not as
easy in languages such as Chinese and Japanese). This front end
also figures out grammatical details like functions and parts of
speech. For instance, which words are proper nouns, numbers, and
so forth; where sentences begin and end; whether a phrase is a
question or a stateme