Can you please help me to do a text to speech sythesiser using concatenative synthesis in matlab

I want to create a text to speech conversion system using concatenative synthesis. My plan is to generate a Unicode for each letter in keyboard and call the corresponding wav files from database. Is it possible??? Could you please guide me ??

[Walter Roberson]

That approach works very poorly for English and not well for some other languages but might be workable for Esperanto or a few other languages (perhaps Swahili)