What is audio description on TV?

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Tags

1. #media
2. #primarily
3. #description
4. #impaired
5. #precisely
6. #narration
7. #television
8. #intended
9. #called
10. #visual
11. #video
12. #track
13. #consumers
14. #audio
15. #including
16. #dance
17. #opera
18. #visually
19. #referred
20. #blind
21. #described
22. #additional