No voice at this time. Apple pulled the API for it for some reason

Caller Mode is designed for someone to act as a caller for a pilot during a contest. The next release has some enhancements

However you can have your iPod read the written sequences for you that are included. You'll have to enable Accessibility in setting on the iPod Touch then make sure you read the message that shows about how to navigate because your swiped and taps all change. Once enabled, you can actually slow down how faster it reads a document to you