Enhanced CD is a

certification mark A certification mark (or conformity mark) on a commercial product indicates the existence of an accepted product standard or regulation and a claim that the manufacturer has verified compliance with those standards or regulations. The specifi ...

of the Recording Industry Association of America for various technologies that combine audio and computer data for use in both

Compact Disc The compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony to store and play digital audio recordings. In August 1982, the first compact disc was manufactured. It was then released in Oc ...

and CD-ROM players. Formats that fall under the "enhanced CD" category include mixed mode CD (Yellow Book CD-ROM/Red Book

CD-DA Compact Disc Digital Audio (CDDA or CD-DA), also known as Digital Audio Compact Disc or simply as Audio CD, is the standard format for audio compact discs. The standard is defined in the ''Red Book'', one of a series of Rainbow Books (named ...

), CD-i,

CD-i Ready CD-i Ready is a compact disc format for mixing audio and data content on a CD. It was developed by Phillips in 1991, based on the CD-i format. The CD-i Ready format uses a certain technique to get audio CD players to skim over the CD-i software an ...

, and CD-Extra/CD-Plus (

Blue Book A blue book or bluebook is an almanac, buyer's guide or other compilation of statistics and information. The term dates back to the 15th century, when large blue velvet-covered books were used for record-keeping by the Parliament of England. The ...

, also called simply Enhanced Music CD or E-CD).What is an Enhanced CD?
The technology was popular in the late 1990s and early 2000s with the increase of computer usage. Music CDs often included

music video A music video is a video of variable duration, that integrates a music song or a music album with imagery that is produced for promotional or musical artistic purposes. Modern music videos are primarily made and used as a music marketing device ...

s, wallpapers, and other various content. However, more recently, acts wishing to include enhanced content often include a

DVD The DVD (common abbreviation for Digital Video Disc or Digital Versatile Disc) is a digital optical disc data storage format. It was invented and developed in 1995 and first released on November 1, 1996, in Japan. The medium can store any kind ...

instead, with the disadvantage of it not playing in a CD audio player, but with the advantage of storing greater amounts of data and/or higher-quality video.

Problems

Sometimes computer CD-ripping programs (particularly

cdparanoia cdparanoia is a compact disc ripper for *nix and BeOS, developed by Xiph.org. It is designed to be a minimalistic, high-quality CD ripper that would be able to compensate for and adjust to poor hardware to produce a flawless rip. libparanoia ...

and CDBurnerXP) have problems ripping some enhanced CDs, especially those that have the data in a separate section after the audio section. These CDs have the data 11,400 sectors (2m32s) after the audio, but some CD rippers may try to rip this blank section with the last track; the end result is that the ripper stalls during the last track or simply reports errors. Some more modern computers have difficulty reading the computer data off an Enhanced CD, and require separate software to detect it.

References

120 mm discs Audio storage Certification marks Video storage {{sound-tech-stub

Problems

See also

References