FACTOID # 21: 15% of Army recruits from South Dakota are Native American, which is roughly the same percentage for female Army recruits in the state.
 
 Home   Encyclopedia   Statistics   States A-Z   Flags   Maps   FAQ   About 
   
 
WHAT'S NEW
RELATED ARTICLES
People who viewed "CDDB" also viewed:
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > CDDB

CDDB (which stands for Compact Disc Database) is a database for software applications to look up audio CD (compact disc) information over the Internet. This is performed by a client which calculates a (nearly) unique disc ID and then queries the database. As a result, the client is able to display the artist name, CD title, track list and some additional information. A database is an organized collection of data. ... Computer software (or simply software) refers to one or more computer programs and data held in the storage of a computer for some purpose. ... Application software is a loosely defined subclass of computer software that employs the capabilities of a computer directly to a task that the user wishes to perform. ... The Compact Disc logo was inspired by that of the previous Compact Cassette. ...


The database is used primarily by media player and CD ripper software. A media player is a piece of application software for playing back multimedia files. ... A CD ripper, CD grabber or CD extractor is a piece of software designed to extract raw digital audio (in format commonly called CDDA) from a compact disc to a file or other output. ...


The need for CDDB is a direct consequence of the original design of the CD, which was conceived as an evolution of the gramophone record, and did not consider the audio tracks as data files to be identified and indexed. The audio CD format does not include the disc name or track names, therefore a supplemental database is needed to supply this information when discs are used with modern media systems. A later development called CD-TEXT is another solution to the same problem. A gramophone record, (also vinyl record, phonograph record, LP record, or simply record) is an analogue sound recording medium consisting of a flat disc with an inscribed modulated spiral groove. ... CD-Text is an extension of the Red Book standard for audio CDs. ...

Contents


History

CDDB was invented by Ti Kan and Steve Scherf. The source code was released under the GNU General Public License, and thus many people submitted CD information believing that the contributions, too, would remain freely available to others. Later, however, the project was sold and the license conditions were changed and it was no longer a free service, requiring commercial developers to pay an "initial fee", as well as a license fee based on the usage of the servers and support. It also included terms that many programmers felt were unacceptable: no other similar database (such as freedb) could be accessed in addition to CDDB, and the CDDB logo was required to be displayed while the database was being accessed. Steve Scherf is one of the creators of CDDB and co-founded Gracenote, where he serves as chief architect, and continues to develop new media recognition technologies and other realtime services. ... The GNU logo The GNU General Public License (GNU GPL or simply GPL) is the most popular free software license, originally written by Richard Stallman for the GNU project. ... freedb is a database of compact disc track listings where all the content is under the GNU General Public License. ...


In March 2001, CDDB, now owned by Gracenote, banned all unlicensed applications from accessing their database. New licenses for CDDB1 (the original version of CDDB) were not available anymore, as they wanted to force programmers to switch to CDDB2 (a new version incompatible with CDDB1 and hence with freedb). 2001 : January - February - March - April - May - June - July - August - September - October - November - December Events: March 3 - A U.S. Air Force Materials Command C-23 Sherpa transport crashes during stormy weather in the U.S. state of Georgia, killing 21. ... Gracenote is a commercial enterprise which maintains and licenses a database containing information about the contents of CDs. ...


After the unpopular commercialization of CDDB as Gracenote, most media player applications switched to freedb, but continued to refer to the service as 'CDDB' as a generic term. It is still common to see many applications refer to CDDB in their documentation when in fact the application is using freedb. Gracenote is a commercial enterprise which maintains and licenses a database containing information about the contents of CDs. ... freedb is a database of compact disc track listings where all the content is under the GNU General Public License. ... freedb is a database of compact disc track listings where all the content is under the GNU General Public License. ...


How A CDDB Works

CDDB was designed around the task of identifying entire CDs, not merely single tracks. The identification process involves creating a 'discid', a sort of "fingerprint" of a CD created by performing calculations on the track duration information stored in the table-of-contents of the CD. This discid is used with the internet database, typically either to download track names for the whole CD or to submit track names for a newly-identified CD. In computer science, a hash table is a data structure that speeds up searching for information by a particular aspect of that information, called a key. ...


Since identification of CDs is based on the length and order of the tracks, CDDB cannot identify playlists in which the order of tracks has been changed, or compilations of tracks from different CDs. CDDB also cannot distinguish different CDs that have the same number of tracks and the same track lengths.


Alternatives

The licence change motivated a new project, freedb, which is intended to remain free. freedb is a database of compact disc track listings where all the content is under the GNU General Public License. ...


An alternative project that aims to enhance CDDB beyond a mere database of CDs is called MusicBrainz. Their site also contains more information on CDDB and some database statistics of CDDB and freedb. MusicBrainz (MusicBrainz. ...


Another commercial alternative to CDDB is the AMG LASSO service. LASSO was launched by All Media Guide in late 2004 and includes recognition technology for CDs, DVDs, and digital audio files. The AMG metadata database is generally recognized to be more comprehensive and of higher quality, because of quality controls that CDDB lacks. Microsoft's Windows Media Player, Musicmatch Jukebox, and the Virgin Digital Megastore are licensees. AMG LASSO is a a media recognition service launched by the All Media Guide in 2004. ... All Media Guide (commonly known as AMG), is the company which owns and maintains All Music Guide, All Game Guide and All Movie Guide. ... Windows Media Player is a proprietary freeware software media player used for playing audio, as well as viewing video and images on personal computers running the Microsoft Windows operating system. ... Y!Music Musicmatch Jukebox, made by Yahoo! Musicmatch, Inc, is an audio player that contains a powerful media library. ...


External links


  Results from FactBites:
 
Gracenote - Wikipedia, the free encyclopedia (1516 words)
The CDDB technology became popular in the 1990s, as it allowed MP3s to be automatically annotated with artist, album, title, and other information during the process of ripping from CD.
CDDB was then spun out of Escient and then in July of 2000 renamed Gracenote.
CDDB claims that license grant was an error, and had modified the website in 1998 to avoid mention of the database's copyright status.
CDDB - Wikipedia, the free encyclopedia (825 words)
CDDB (which stands for Compact Disc Database) is a database for software applications to look up audio CD (compact disc) information over the Internet.
The need for CDDB is a direct consequence of the original design of the CD, which was conceived as an evolution of the gramophone record, and did not consider the audio tracks as data files to be identified and indexed.
CDDB was invented by Ti Kan as a local database which was delivered with his popular xmcd music player application.
  More results at FactBites »

 
 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:

 


Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m