Existing networked broadcasting systems are stereo oriented. Multichannel sound demands an upgrade of the existing stereo based gear in the chain from production to playout and for archiving. Existing systems rely on audio file formats that lack some fundamental requirements such as the possible integration of a stereo downmix, which is essential in broadcasting. They suffer from restrictions such as the 4GB barrier that incapacitate them for usage in professional systems. On the other hand there is a need to find solutions that align with existing formats to build an easy upgrade path for potential implementors. The solutions discussed in this paper tries to find a way to fulfill both goals.
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