Multiplexed Audio Channels Description Code Sequence Attribute
| Tag | (003A,0300) |
|---|---|
| Type | Conditionally Required, Empty if Unknown (2C) |
| Keyword | MultiplexedAudioChannelsDescriptionCodeSequence |
| Value Multiplicity | 1 |
| Value Representation | Sequence (SQ) |
Description of any multiplexed audio channels. See Section C.7.6.5.1.3.
Zero or more Items may be included in this Sequence.
Required if the Transfer Syntax used to encode the multi-frame image contains multiplexed (interleaved) audio channels, such as is possible with MPEG2 Systems (see [ISO/IEC 13818-1]).
Section C.7.6.5.1.3
C.7.6.5.1.3 Multiplexed Audio
During a video acquisition, audio may be used for voice commentary of what is being observed, as well as to record sound-based physiological information such as Doppler audio.
Some Transfer Syntaxes allow for the multiplexing of interleaved audio with video data, and the Attributes of the Cine Module support this encoding paradigm. They are not intended to describe audio acquired simultaneously when it is encoded in other SOP Instances or within Attributes other than Pixel Data (7FE0,0010) of the same SOP Instance.
Synchronization between audio and video is assumed to be encoded at the Transfer Syntax level (i.e., within the encoded bit stream).
Note
If no audio was recorded, the Multiplexed Audio Channels Description Code Sequence (003A,0300) will be present and contain no Items.
[ISO/IEC 13818-1]
[ISO/IEC 13818-1] ISO/IEC. 2000. Information technology - Generic coding of moving pictures and associated audio information: Systems.