Use specific accent for speech / pronunciation
The speech output in the Quiz by default uses the default system voice for the selected language. To use specific accent, you need to download specific accent voices in the System Settings.
Please see the article Changing the voice for speech output for a detailed description on how to download more voices.
Using a specific voice / accent
Unfortunately, it is technically not possible for Wokabulary to determine which voice you set as default for each language. Instead, we always use those voices for which an Enhanced or Premium Quality version is available.
If you want Wokabulary to use a specific voice or accent, make sure to only have one high-quality voice installed for each language.