You may customize the word-to-phoneme conversion by creating user dictionaries.
Launch the Dictionary Editor from Settings menu.
Only one dictionary can be made active for each language/phoneme set combination. During playback, the synthesis engine will first lookup the item in the user dictionary and if the item isn't included, it will automatically fall back to the default word-to-phoneme converter.
Choose a phoneme set for the language.
In the current version, each language is associated with one phoneme set.
