typeDefinition 'DirectSpeakers' is used for traditional channel-based audio. Many
audioPackFormat definitions with the 'DirectSpeakers' type are already defined in the Common Definitions, so they do not need to be defined explicitly when generating ADM metadata.
There are no additional sub-elements defined for the
typeDefinition 'DirectSpeakers'. See Common Sub-elements for a list of the possible sub-elements. Even though it is defined as a common sub-element, the absoluteDistance sub-element is unlikely to be used in the 'DirectSpeakers' mode.
<audioPackFormat audioPackFormatID="AP_00010002" audioPackFormatName="urn:itu:bs:2051:0:pack:stereo_(0+2+0)" typeLabel="0001" typeDefinition="DirectSpeakers"> <audioChannelFormatIDRef>AC_00010001</audioChannelFormatIDRef> <audioChannelFormatIDRef>AC_00010002</audioChannelFormatIDRef> </audioPackFormat>