Here's how you can enable VoiceOver on your Apple TV. VoiceOver can be helpful if you want to have your Apple TV help you navigate its menu system.
1. Go to Settings.
2. Click on General.
3. Click on Accessibility.
4. Set VoiceOver to On.
If you have an Apple TV but find it difficult or impossible to see and navigate the menu system VoiceOver is there to help. An accessibility option meant to help those with visual challenges, VoiceOver "speaks" the controls to you, letting you hear what you can't see.More at iMore
Additional resources for Apple TV