How does closed captioning work? Do they use some type of speech recognition software or does an actual operator type in the words, because the text is full of wrong words and nonsense words.

TriviaFan22

There are several ways. With pre-recorded shows, a transcription is provided and is rendered in time with the sequencing of the show. In other cases, the equivalent of a stenographer provides the text via speech through a computer, as may be used in live shows. This is known as automatic human speech recognition software. This software is effective in rendering the speech of one speaker, so such a speaker would be repeating the words of the broadcaster and the software would render the captioning. "...since 2003, the BBC does live subtitling by having someone re-speak what is being broadcast." In some cases the words are rendered manually through a keyboard. "Meanwhile, sport events on channels like ESPN are using court reporters, using a special (steno) keyboard and individually constructed 'dictionaries.'" http://en.wikipedia.org/wiki/Closed_captioning Under subheading, television and video. Feb 15 13, 9:14 PM