Enhanced CD is a certification mark of the Recording Industry Association of America for various technologies that combine audio and computer data for use in both CD-Audio and CD-ROM players. Formats that fall under the enhanced CD category include mixed mode CD (Yellow Book CD-ROM/Red Book CD-DA), CD-i, CD-i Ready, and CD-Extra/CD-Plus (Blue Book, also called simply Enhanced Music CD or E-CD).
See also CD player CDVU+ DualDisc Mixed Mode CD Super Audio CD
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