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ACCESS Main Street Resource Description
Description is the verbal depiction of key visual elements in media and live productions. Also known as “audio description” or “video description,” the description of media involves the interspersion of these depictions with the program’s original audio. "Description is the key to opening a world of information for persons with a vision loss, literacy needs, or loss of cognitive abilities. While description was developed for people who are blind or visually impaired, millions of others may also benefit from description’s concise, objective translation of media’s key visual components.
These guidelines are a key for vendors and cover a range of topics from preparing to describe to determining both what information needs to be described and how to describe it. The information is also applicable to vendors and other businesses [PDF] that provide description for broadcast television and other media. Some background information and rationale are included for the novice, as well as an evolving list of description resources to help improve the quality and efficiency of one’s description."
This web page includes a more detailed definition, philosophy and more.
Described and Captioned Media Program, in conjunction with The National Association for the Deaf and the American asociation for the Blind