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Captions For Deaf and Hard-of-Hearing Viewers
On this page:
- What are captions?
- Open and closed captions
- Digital closed captioning
- Real-time captioning
- Electronic newsroom captions
- Edited and verbatim captions
- Rear window captioning
- Current research
- The law
- Captions and the FCC
- Who is required to provide closed captions?
- When will I see more closed-captioned programming?
- What programs are exempt?
- Other resources
On August 5, 1972, Julia Child, “The French Chef,” in a program televised from WGBH studios in Boston, taught viewers how to make one of her prized chicken recipes. The significance of that day stretched far beyond the details of the entrée to have a profound and lasting impact on human communication. It was the first time Americans who are deaf and hard-of-hearing could enjoy the audio portion of a national television program through the use of captions.
Since then, captions have opened the world of television to people who are deaf and hard-of-hearing. At first, special broadcasts of some of the more popular programs were made accessible through the Public Broadcasting Service. Now, more than 2,000 hours of entertainment, news, public affairs, and sports programming are captioned each week on network, public, and cable television. Captions are no longer a novelty: they have become a necessity.
What are captions?
Captions are words displayed on a television screen that describe the audio or sound portion of a program. Captions allow viewers who are deaf or hard of hearing to follow the dialogue and the action of a program simultaneously. They can also provide information about who is speaking or about sound effects that may be important to understanding a news story, a political event, or the plot of a program.
Captions are created from the transcript of a program. A captioner separates the dialogue into captions and makes sure the words appear in sync with the audio they describe. A specially designed computer software program encodes the captioning information and combines it with the audio and video to create a new master tape or digital file of the program.
Open and closed captions
Captions may be "open" or "closed." To view closed captions, viewers need a set-top decoder or a television with built-in decoder circuitry. Open captions appear on all television sets and can be viewed without a decoder. In the past, some news bulletins, presidential addresses, or programming created by or for deaf and hard-of-hearing audiences were open captioned. With the widespread availability of closed-caption technology, open captions are rarely used.
Digital closed captioning
Closed captioning has become available for digital television sets, such as high-definition television (HDTV) sets, manufactured after July 1, 2002.1 Digital captioning provides greater flexibility by enabling the viewer to control the caption display, including font style, text size and color, and background color.
1 Zenith Electronics Corporation, July 1, 2002
Real-time captions are created as an event takes place. A captioner (often trained as a court reporter or stenographer) uses a stenotype machine with a phonetic keyboard and special software. A computer translates the phonetic symbols into English captions almost instantaneously. The slight delay is based on the captioner’s need to hear the word and on the computer processing time. Real-time captioning can be used for programs that have no script; live events, including congressional proceedings; news programs; and nonbroadcast meetings, such as the national meetings of professional associations.
Although most real-time captioning is more than 98 percent accurate, the audience will see occasional errors. The captioner may mishear a word, hear an unfamiliar word, or have an error in the software dictionary. Often, real-time captions are produced at a different location from the programming and are transmitted by phone lines. In addition to live, real-time captioning, captions are being put on prerecorded video, rental movies on tape and DVD, and educational and training tapes using a similar process but enabling error correction.
Electronic newsroom captions
Electronic newsroom captions (ENR) are created from a news script computer or teleprompter and are commonly used for live newscasts. Only material that is scripted can be captioned using this technique. Therefore, spontaneous commentary, live field reports, breaking news, and sports and weather updates may not be captioned using ENR, and real-time captioning is needed.
Edited and verbatim captions
Captions can be produced as either edited or verbatim captions. Edited captions summarize ideas and shorten phrases. Verbatim captions include all of what is said. Although there are situations in which edited captions have been preferred for ease in reading (such as for children’s programs), most people who are deaf or hard-of-hearing prefer the full access provided by verbatim texts.
Rear window captioning
More and more movie theaters across the country are offering this type of captioning system. An adjustable Lucite panel attaches to the viewer’s seat and reflects the captions from a light-emitting diode (LED) panel on the back of the theatre.
Researchers are studying caption features, speeds, and the effects of visual impairments on reading captions. This research will help the broadcast television industry understand which caption features should be retained and which new features should be adopted to better serve consumers. Other research is examining the potential for captions as a learning tool for acquiring English-language and reading skills. These studies are looking at how captions can reinforce vocabulary, improve literacy, and help people learn the expressions and speech patterns of spoken English.
The Americans with Disabilities Act (ADA) of 1990 requires that businesses and public accommodations ensure that disabled individuals are not excluded from or denied services because of the absence of auxiliary aids. Captions are considered one type of auxiliary aid. Since the passage of the ADA, the use of captioning has expanded. Entertainment, educational, informational, and training materials are captioned for deaf and hard-of-hearing audiences at the time they are produced and distributed.
The Television Decoder Circuitry Act of 1990 requires that all televisions larger than 13 inches sold in the United States after July 1993 have a special built-in decoder that enables viewers to watch closed-captioned programming. The Telecommunications Act of 1996 directs the Federal Communications Commission (FCC) to adopt rules requiring closed captioning of most television programming.
Captions and the FCC
The FCC rules on closed captioning became effective January 1, 1998. They require people or companies that distribute television programs directly to home viewers to make sure those programs are captioned. Under the rules, 100 percent of nonexempt programs shown on or after January 1, 1998, must be closed captioned by January 1, 2006. Also, 75 percent of nonexempt programs shown before January 1, 1998, must be closed captioned by January 1, 2008. The rules do not apply to videotapes, laser disks, digital video disks, or video game cartridges.
Who is required to provide closed captions?
The rules apply to people or companies that distribute television programs directly to home viewers (video program distributors). Some examples are local broadcast television stations, satellite television services, and local cable television operators. In some situations, video program providers are responsible for captioning programs. A video program provider can be a television program network (for example, ABC, NBC, UPN, Lifetime, A&E) or other company that makes a particular television program. However, since networks do not distribute television programs directly to home viewers, they are not responsible for complying with the captioning rules and are not required to respond to complaints from viewers. However, broadcast and cable networks and program producers pay close attention to captioning issues and, along with the U.S. Department of Education, are the primary source for funding of captioning.
When will I see more closed-captioned programming?
The FCC rules can create transition periods during which the amount of closed-captioned programming will gradually increase. During 2000 and 2001, video program distributors must provide captioning for 450 hours per channel per calendar quarter of new programs (programs shown on or after January 1, 1998). In 2002 and 2003, distributors must increase the hours per channel of captioned programming to 900 per calendar quarter for new programs. In 2004 and 2005, 1,350 hours per channel per calendar quarter of new programs must be captioned.
If a video program distributor is already providing more than the required hours per channel during a specific calendar quarter, that distributor must continue to provide captioned programming at substantially the same level as the average level it provided during the first 6 months of 1997.
For programming shown before January 1, 1998, at least 30 percent of a channel’s programming during each calendar quarter must be captioned starting January 1, 2003.
What programs are exempt?
Some advertisements, public service announcements, non-English-language programs (with the exception of Spanish programs), locally produced and distributed non-news programming, textual programs, early-morning programs, and nonvocal musical programs are exempt from captioning. The FCC plans to review the program exemptions later to determine whether any changes are necessary.2
2 The Caption Center
To find out more about the FCC rules and captions, including information on the complaint process, callVoice: 1-888-CALL-FCC (1-888-225-5322)
TTY: 1-888-TELL-FCC (1-888-835-5322)
Locally at (202) 418-7096
TTY: (202) 418-7172
Where can I get more information?
NIDCD maintains a directory of organizations that can answer questions and provide printed or electronic information on captioning. Please see the list of organizations at www.nidcd.nih.gov/directory.
Use the following keywords to help you search for organizations that are relevant to captioning:
For more information, contact us at:
NIDCD Information Clearinghouse
1 Communication Avenue
Bethesda, MD 20892-3456
Toll-free voice: (800) 241-1044
Toll-free TTY: (800) 241-1055
Note: Many commercial vendors and some specialized software will allow individuals, groups, and schools to create captions.
NIH Publication No. 00-4834
Reviewed: July 2002