Audio description refers to an additional narration track for blind and visually impaired consumers of visual media (including television and film, dance, opera, and visual art). It consists of a narrator talking through the presentation, describing what is happening on the screen during the natural pauses in the audio, and sometimes during dialogue if deemed necessary.
For the performing arts (theater, dance, opera), and media (television, movies and DVD), description is a form of audio-visual translation, using the natural pauses in dialogue or between critical sound elements to insert narrative that translates the visual image into a sense form that is accessible to millions of individuals who otherwise lack full access to television and film.
In museums or visual art exhibitions, audio described tours (or universally designed tours that include description or the augmentation of existing recorded programs on audio- or videotape), are used to provide access to visitors who are blind or have low vision. Docents or tour guides can be trained to employ audio description in their presentations. Audio description of sporting events is now becoming more common, in particular at soccer stadiums.