Please, someone explain here in what languages this program works
and is there any positive effect of working and !?
From the Vovsoft website:
Language: English, Deutsch, Español, Français, Italiano, Magyar, Nederlands, Polski, Português, Pусский, Shqip, Slovenščina, Suomi, Svenska, Tiếng Việt, Türkçe, Čeština, Ελληνικά, Українська, български, עִבְרִית, العربية, فارسی, 中文, 日本語, 한국어
As to the “positive effects”, one example is if you have a lengthy item to read and you paste it in the text box it will read it to you, functioning in the way an audiobook does.
I hope that helps.