Different television equipment allows different access options for displaying captions on TV. Below are some accessibility and other general features to consider when purchasing:
Caption problems due to poor reception are rare if you are using a digital television or digital set-top box. With a digital signal you should either get a good picture with good captions or no picture and no captions at all.
If there are caption display problems on screen on multiple stations it usually means that your TV or set-top box is faulty and you will need to contact the manufacturer. Sometimes software upgrades are available that will fix this.
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The placement of 2-D captions is a relatively straightforward matter – they will generally be positioned at the bottom of the screen to avoid covering important visual elements, but moved if necessary. In 3-D, the challenge is to place the captions appropriately into the 3-D space so as to not destroy the illusion of three dimensions.
In the US, most live or real-time captioning is done by stenocaptioners, who use a phonetic keyboard to create captions as a program is broadcast. (In Australia, live captioning is performed both by stenocaptioners, and by captioners using speech recognition software). The quality of live captions can be variable, and earlier this year, NCAM conducted an online survey which asked caption users to rate different types of caption errors, and the degree to which they make news programs hard to follow.
