The invention enables the inclusion of voice and remaining audio information at different parts of the audio production process. In particular, the invention embodies special techniques for VRA-capable digital mastering and accommodation of VRA by those classes of audio compression formats that sustain...http://www.google.de/patents/US6772127?utm_source=gb-gplus-sharePatent US6772127 - Method and apparatus for accommodating primary content audio and secondary content remaining audio capability in the digital audio production process
