Assertion: audio cd | /r/HasProperty | compact disc digital audio
Facets:
value: officially
type: MANNER
Source sentences:
text: The logical format of an audio CD (officially Compact Disc Digital Audio or CD-DA) is described in a document produced in 1980 by the format's joint creators, Sony and Philips.
text: There have been moves by the recording industry to make audio CDs (Compact Disc Digital Audio) unplayable on computer CD-ROM drives, to prevent the copying of music.