Voice control settings
Settings for the voice control system are made here[1].
Settings→System→Voice Control
Settings can be personalized in the following areas:
- Repeat Voice Command
- Gender
- Speech Rate
Sound settings
Select sound settings under:
Settings→Sound→System Volumes→Voice Control
Language settings
The voice control system is not available for all languages. The languages available for voice commands are indicated by the 
icon in the list of languages.
Changing the language here will also change the language in the menus, messages and help texts.
Settings→System→System Languages and Units→System Language