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Audio description is a narrative interpretation of visual images in the form of speech accessible to everyone, for the blind and visually impaired people, providing them equal access to, enjoyment and learned something new in the works of popular, cultural or educational significance.
Blind and visually impaired persons are possible to monitor the performance with wireless headsets from which they hear the translation, a device whose signal reaches the handset and does not interfere with other devices in the hall because it operates on the infrared dual channel infrared principle. Through one audio channel users can listen to the person who explains what is happening on the stage, and the another channel provides sound coming from the stage.
Telling through presentation, the narrator describes the events and translates visual image by speech, using pauses in the dialogue or between crucial sound elements, and if necessary, during the dialogue. A person, who is competent to such translation, inserts descriptions of important visual elements: movements, appearance of characters, body language, costumes, setting, lighting, etc. Being it is transmitted through a wireless headset, blind and partially sighted people are able to sit wherever they want in the audience. Audio description provides that visually impaired persons have equal access to performances (theater, dance, opera, film, video and television), exhibitions (art galleries and museums, history and science museums, centers of visitors), and even sporting events are followed by audio-description, as well as Olympic and Paralympic Games.
In museums or exhibitions, audio description tours (or universally designed tours that include a description or an upgrade to existing programs recorded on audio or video tape), are used to provide access to visitors who are blind or visually impaired. With the accompanying text regarding the showpiece, the descriptions of important visual elements is added as already recorded part, or through a special rewinding systems. These tours also include recorded information on the device, and basic navigation through an area.
With audio-description learning is much easier if there is a narrative translation.
In today's highly visual world, there are many teachers who are teaching through video presentations, but this method is not accessible for the visually impaired. Even many of them hardly take decision to make the video accessible to everyone, justifying with the luck of time, that energy and resources invested in the such video at the local level is too tiresome and have limited resources.
However, the increasingly inclusive classroom—in which more and more students with varied learning and sensory abilities receive instruction within a common environment—removes a great deal of latitude from the teacher’s ability to amend his or her curriculum.
So if the video should introduce or support the curriculum, video must be used and adapted.
Students with visual impairments—just like all students—deserve equal access to educational opportunities and materials. In the very essence, the primary importance of the audio description is obvious, presenting visual information in a format accessible to everyone, especially to people who cannot see or less visible, making it "visual - verbal".
The fact is that 87% of educational lectures are inaccessible. It means, or the content must be prepared at first, or visually impaired persons are forced to be left to nearby colleague who describes and explains, which is no good because that person is usually not trained for such description.
For students without visual impairments and, especially people with autism, benefit from its value in literacy development (e.g., vocabulary and reading) and content learning. Through the research of scientists, led to the data to better learn the words and image and not just through words (written form only), making the audio description useful to everyone.