Links recomendados.

http://www.lumenvox.com/espanol/products/tts/#

http://translate.google.com.bo/

http://www2.research.att.com/~ttsweb/tts/demo.php

http://imtranslator.net/translate-and-speak/.

Otros

http://text-to-speech.imtranslator.net/speech.asp