TANDBERG EN8000, Справочное руководство

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Audio Modes
Reference Guide: EN8000 MPEG-4 PArt 10 (H.264/AVC) Encoders Page E-9
ST.RE.E10233.1
Audio groups
take n from SDI
Group 1
Group 3
Group 2
Group 4
4:1
Dembedder
1
SDI Embedded 1
SDI Embedded 2
Group 1
Group 3
Group 2
Group 4
4:1
User DID selection
Default 0x1FD)
Dembedder
2
SDI Embedded 3
SDI Embedded 4
Audio
Router
Advanced
Audio A
Audio groups
taken from SDI
User DID selection
Default 0x2FF)
Advanced
Audio B
Audio A
Audio B
Figure E.4: Embedded Audio (SDI) Signal Flow
The Encoder can de-embed any two DID’s at any one time, thus giving a total of four
embedded audio sources: embedded audio 1-4.
The default DID for embedded audio 1-2 is 2FFh (Group 1).
The default DID for embedded audio 3-4 is 1FDh (Group 2).
NOTE…
Default DIDs are selected when a DID value
≥
1024 is set.
While there are a possible eight stereo pairs available both the standard and advanced audio
encoding modules can process up to two stereo pairs each.
HD SDI Embedded Audio
The Encoder has the capability of de-embedding up to 4 groups of audio data from 4 different
Data Identifier (DID) in the HD-SDI video input. Each group contains two stereo pairs.
•
Up to 4 sets of pre-encoded Dolby Digital bitstreams or linear PCM as controlled as
Advanced Audio 4A – 4D.
The standard DIDs that are used for the extraction are:
•
Group 1 = 0x2E7
•
Group 2 = 0x1E6
•
Group 3 = 0x1E5
•
Group 4 = 0x2E4
Other DIDs can be selected and valid values are described in the SMPTE 299 specification.