How good is the text-to-speech engine?
The TTS engine can convert most English sentences to understandable speech. It also handles certain special cases, such as text containing dollar amounts. For example, it will read “$3.75” as “three dollars and seventy-five cents.” Though text-to-speech technology has come a long way since the talking computer in “War Games”, the output still has a computer-generated quality. Pre-recorded audio, though time consuming to create, is the only way to generate a natural, human-sounding voice application interface. The widespread use of TTS within an application is not recommended.
