Was just wondering if it was possible; or is the use of a module needed.
Matt Apperson did answer this two years ago ( http://developer.appcelerator.com/question/119589/text-to-speech-on-iphone ) , but not sure if this has changed, and sadly I couldn't find anything newer on the subject matter. And the 4th answer was just a link to AT&Ts API, which requires to auth to their API.