DualDisc essentially involves sticking a CD onto the back of the DVD Video or DVD Audio disc. The CD Audio layer is thinner than a Compact Disc, to ensure the DualDisc falls within the DVD specification thickness of 1.5mm.Source: The Register
DualDisc was devised as a way of adding backward compatibility to new audio disc format. For the labels, that allows them to ship a single product rather than separate DVD Audio and CD releases, and ensures consumers can build second-generation audio collections before they switch to new hardware.
Written by: Lasse Penttinen @ 28 Jun 2004 11:56