Describing video in audio in the video production process allows visually impaired people to experience the video. To help visually impaired individuals better comprehend the film, audio narration is provided regarding what characters are wearing, what they are doing, their ages, and other physical descriptions. Individuals who have impaired vision can watch Comedy Network, Discovery Television, Hiccups, 11th Hour, and several other programs using descriptions of visual elements. These shows need to be first changed into Descriptive Video Interface (DVI). Descriptive video thus allows visually impaired people to view television and share the enjoyment with the whole family. Descriptive video is produced by businesses.
Multi channel television sound (MTS) that makes use of a third audio channel, Secondary Audio Program (SAP) is the technology behind this. DVI is also called alternative audio. Viewer experience is enhanced when key visual elements are audio described. For a movie, descriptions aren’t added to the soundtrack. The movie runs a separate DTS soundtrack.
Research on voice narrations began in 1985, when a company with a history of creating captioning of programs for hearing-impaired people, started looking at ways to offer a better experience for those with no vision. Individuals with hearing and vision impairment, spend more time viewing television when compared with others, and live mostly indoors because of their impairment. The market for the descriptive video was huge, and in 1988 the DVS organization was formed. It researched and developed description techniques. PBS was the first to make use of this technology on TV, and it was later used to create films for vision impaired people. Now, one can find the DVS feature in DVDs.
New TV models include a SAP channel and it’s easy for the visually impaired to enjoy movies with the rest of the family. All you need to do is select the SAP channel to get and record DVS. The feature is found under audio on the onscreen menu accessible with the VCR remote. So, first set it to SAP, load the DVD that contains the DVI movie and watch it. Additionally you can consult the TV or VCR manual to establish SAP viewing. The visually impaired will wear a headphone to listen to their separate version of narrative audio for their entertainment, while you will hear the standard audio with the rest of the family.
SAP can be used in cinemas to allow visually impaired individuals to watch movies. The use of headphones allows them the use of the SAP channel. A lot of companies are working towards building described video for the US and Canadian producers, so everyone in the family can enjoy a good movie together.
The ways we view and interact with content has changed considering the advance of these types of modern technologies. Visually impaired can now view movies and television shows, and soon they will also be watching movies on the internet and PDAs. The voice narrations that describe visual elements can make various projects and education more accessible to visually impaired people worldwide.
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