This text to speech engine is a work in progress! I have used it in some of my other projects, please check them out. Please comment and let me know any words that are mis-pronounced and I'll try and fix them. It's best to use phonetic spelling although it will attempt to pronounce real English!
This is all my own script, however thanks to @botboy3000 for his excellent Text to Speech Project which inspired me to attempt this project http://scratch.mit.edu/projects/10116183/ Also TheEnglishProfessor on YouTube for a lesson in Phonetics. 03/04/14 - shared 04/04/14 - moved all scripts to one sprite (will make it easier to use in other projects) 08/04/14 - improved phonemes and timing 09/04/14 - greeting added 12/04/14 - all phonemes re-done, major improvement! 31/05/14 - tweaked phonemes and timing 03/07/14 - improved "ou" detection, (you, your, sound) 29/10/14 - Separated the demo to a new sprite 06/12/15 - Tried adding a "proper" animated mouth thanks to @breenworks project https://scratch.mit.edu/projects/68145618/