Patent ID: 8989881
Filing Date: 2015-03-24
Classification: G11B

Abstract:
1. An apparatus for writing audio information, from which a multichannel audio representation may be reconstructed, onto a compact disc (CD), the apparatus comprising: a writer for writing parametric multichannel information onto one or several locations of the CD which are not used for two stereo audio channels including a two-channel stereo representation of the audio information, the parametric multichannel information being configured such that, together with the two stereo audio channels, the multichannel audio representation with more than two audio channels is enabled, wherein the parametric multichannel information comprises binaural cue parameters or intensity stereo parameters, wherein the CD already has the stereo audio channels written on the CD, before the parametric multichannel information is written by the writer, or wherein the writer is further configured to write, starting from a CD without audio information, both the two stereo audio channels and the parametric multichannel information, wherein the stereo audio channels are written in accordance with the CD standard on the CD so that a reproduction of the two stereo audio channels in stereo is possible using a CD reproduction device configured in accordance with the CD standard, and wherein a reproduction of the multichannel audio representation using the two-channel stereo representation and the parametric multichannel information is not possible using a CD reproduction device configured in accordance with the CD standard.