@Kyller2ndTV: I'm not sure if this is possible. Have you tried reaching out to the developers directly at support@waze.com to see if they're able to shed any light on this for you?
You can add your own voice directions by opening Waze > Settings > Voice and sound > Waze voice > Record new voice > Tap the type of direction you would like to record > Tap to start recording, and to stop. For native voice directions, select Voice and sound > Waze voice > Make your selection.
