asterisk users - May 2013 - Seeking for TTS engine supporting Hebrew

I am not aware of any alive project on this field.
My client is interested in it. He told me that Google Translate web
service used to provide pronunciation of hebrew texts, but now speech
button is disabled for Hebrew, and also direct requesting for speech
generation (by  Lefteris Zafiris's awsome scripts) fails.
I can work on Asterisk integration by myself, i'd be happy to know of
such engine(s) at all.
--
Andrey Utkin