Sony & Philips push two-layer Super Audio CD
While the DVD Consortium's Working Group 4 (WG-4) is still working on the 0.9 specification for DVD-Audio, Sony and Philips have been silently carrying on work on their Super Audio CD, the consumer implementation of Sony's DSD. The Sony/Philips disc will have two layers, one carrying normal 44.1kHz, 16-bit CD information (and thus guaranteeing backwards compatibility with existing CD players), the other carrying eight channels in DSD format (two for high-quality stereo, six for surround), plus text and/or graphics.