Disc or disk denotes the vast range of sound and/or image carrier formats developed over more than a century, ranging from the 78 rpm analogue sound recording to current digital compact disc (CD) and digital (video) versatile disc (DVD) formats.


Edmondson, Ray., 2004, Audiovisual Archiving: Philosophy and Principles, United Nations Educational, Scientific and Cultural Organization, Paris, p. 16 with additions by NFSA.