Patent ID: 8363521

Claim:
A storage media, comprising: a storage portion, storing at least first and second information, respectively representing first and second streams of information, where said first stream of information represents different audio information than said second stream of information, but where said first stream of information and said second stream of information represent at least parts of audio that are to be reproduced simultaneously during a same period of time, where said first stream of information has first stored information indicative of a first group of sounds with only first spectral characteristics, and said second stream of information has second stored information indicative of a second group of sounds with only second spectral characteristics, wherein said first spectral characteristics have a spectrum that is different than a spectrum of said second spectral characteristics, and wherein said first stream of information and said second stream of information are separately readable and include information that indicates that said first stream of information is to be reproduced at the same time as said second stream of information, and wherein prior to said storing, said first information is compressed using a first compression that relies on similarities between said sounds in said first information, and said second information is compressed using a second a second compression that relies on similarities between sounds in said second information.